Battle of Alam El Halfa

Jump to: navigation, search The Battle of Alam el Halfa took place between 30 August and 5 September 1942 south of El Alamein during the Western Desert Campaign of the Second World War.  Panzerarmee Afrika —a German-Italian force commanded by  Generalfeldmarschall  Erwin Rommel—attempted an envelopment of the British 8th Army, commanded by Bernard Montgomery. In the last major Axis offensive (Operation Brandung) of the Western Desert campaign, Rommel had planned to defeat the British 8th Army before Allied reinforcements made an Axis victory in Africa impossible.

Montgomery—who had been forewarned of Rommel′s intentions by Ultra intelligence—deliberately left a gap in the southern sector of the front, knowing that Rommel planned to attack there, and deployed the bulk of his armour and artillery around Alam el Halfa ridge, 20 mi (32 km) behind the front. In a new tactic, the tanks were used in an anti-tank role, remaining in their positions on the ridge and refusing to sortie out and be destroyed as in the past.

With his supply situation precarious, and attacks on the ridge failing, Rommel ordered a withdrawal. Montgomery did not exploit his defensive victory, deciding instead to consolidate his forces for the Second Battle of El Alamein. However, the New Zealand 2nd Division launched an abortive attack on Italian positions, suffering heavy losses. Rommel was to claim that British air superiority played a decisive factor in winning the battle, being unaware of British Ultra intelligence. Rommel noted the damaging attacks had a great impact on Axis motorised forces and forced him to break off his offensive.[4]

The price of the defeat to the Axis was not just a tactical defeat and retreat.[1] With the Alam Halfa failure, Rommel was deprived not only of the operational ability to initiate offensives, he lost the operational and tactical ability to defend the German base in Africa.[1] Axis strategic aims in the African theatre were no longer possible.[1] {| class="toc" id="toc"

Contents
[hide] *1 Background
 * 2 Rommel's plan
 * 3 The Allied defences
 * 4 The attack
 * 5 Rommel withdraws
 * 6 Aftermath and losses
 * 7 See also
 * 8 Footnotes
 * 9 References
 * 10 External links
 * }

[edit] Background
A Panzer II of the Afrika Korps.After Rommel′s failed attempt to break through during the First Battle of Alamein and the subsequent counters by Auchinleck′s 8th Army during July 1942, both sides were exhausted. They dug in to rebuild their strength. At Alamein, Rommel′s supply position, however, was precarious. His lines of supply were very extended: his main supply ports of Benghazi and Tobruk were 800 mi (1,300 km) and 400 mi (640 km) from the front respectively, and Tripoli—1,200 mi (1,900 km) away—had almost dropped out of use because of its remoteness.[5] Furthermore, the original Axis plan for the Battle of Gazala in June had been to pause for six weeks on the Egyptian frontier after the capture of Tobruk to regroup and rearm. Rommel, however, had decided to maintain his momentum to prevent 8th Army from organising new defenses and thus pursue the British and Commonwealth forces to Cairo and possibly the Suez Canal. The result of this was that Axis air forces which had been allocated to take part in an attack on Malta had to join the improvised pursuit into Egypt. As a consequence, the British were able to rebuild their strength to attack Axis shipping carrying supplies to North Africa resulting in heavy Axis losses at sea. At the end of August, Rommel′s forces, although reinforced by fresh troops which had been flown in from Crete,[6] were short of key supplies, notably ammunition and petrol.[7]

General Alexander—the newly appointed land Commander-in Chief Middle East Command—had only a short distance from his supply bases and ports in Egypt to the front line. Nevertheless, his lines of supply to Britain, the Commonwealth and the U.S. were very long which resulted in a long gap between requirements being identified and equipment arriving in theatre. By the summer of 1942, however, large quantities of equipment were arriving, notably Sherman tanks were starting to arrive and 6-pounder anti-tank guns were replacing the obsolete 2-pounder. The British and Commonwealth air forces were becoming increasingly influential, supported by newly arrived U.S. squadrons which were building their battleworthiness.[7]

German intelligence had warned Rommel of the arrival of a 100,000 long tons (100,000 t) Allied convoy bringing new vehicles for the Allies in Egypt.[8] Realizing that time was against him, and that the arrival of reinforcements for the British would tilt the balance in their favour, he decided to attack.[9] He informed the Italian Comando Supremo in Rome that he would need 6,000 short tons (5,400 t) of fuel and 2,500 short tons (2,300 t) of ammunition before the planned start date at the end of the month. By 29 August, over 50% of the ships sent had been sunk and only 1,500 short tons (1,400 t) of fuel had arrived at Tobruk. Rommel could not postpone the attack because of his enemy′s growing strength and so decided to take a chance on gaining a quick success. At the start of the battle, after Albert Kesselring had agreed to lend some of the Luftwaffe′s fuel stock, Rommel had enough fuel for 150 mi (240 km) per vehicle with the troops and 250 mi (400 km) for other vehicles.[10]

[edit] Rommel's plan
PzKpfw III's of 21st Panzer advanceThe Alamein sector did not present such a broad front as had been the case in other desert battles, and any armoured thrust would have to pass between the sea, in the North, and the Qattara Depression, in the South, which was impassable for tanks. The British defences were quite strong, but Rommel believed they had a weak point. The southern sector—between Munassib and Qaret El Himeimat—was lightly held and Rommel believed that it was lightly mined.[11]

One account indicated the northern and central sectors of the front were so strongly fortified that the southern stretch of 15 mi (24 km)—between the New Zealanders′ "box" on the Alam Nayil Ridge and the Qattara Depression—was the only part of the front where a quick penetration could possibly have a chance to succeed. To achieve a breakthrough, Rommel was bound to take that line of advance.

Since surprise in location was impossible, it was further indicated that Rommel had to depend on achieving surprise in time and speed. He hoped that if he broke through the southern sector rapidly, and got astride the 8th Army′s communications, it would throw the enemy off balance and its defense disjointed. His plan was to be across the minefields in a night attack, and well beyond them before sunrise.[12]

In the north, Rommel had the Italian infantry divisions—supported by the Ramcke Brigade and the German 164th Infantry Division—conduct a frontal demonstration in an attempt to fix the British defenders in place while Rommel′s main attack cut through the southern sector and then turn north in a sharp left hook movement into Allied supply lines.[13] After this it was hoped most of the Allied units would be surrounded and destroyed. With characteristic optimism, Rommel's final goal was the occupation of Egypt, and in particular the Suez Canal.[14]

This main attack was to be led by his German units, the 15th and 21st Panzer Divisions, accompanied by the 90th Light Infantry Division. To cover their flanks, he had the three divisions of the Italian XX Corpo d'Armata, commanded by Generale De Stefanis.[13]

[edit] The Allied defences
Alam el Halfa battlefield August 1942Allied 25-pounder gun.Since 13 August, command of the British 8th Army had passed to Lieutenant-General (later Field Marshal) Montgomery. British Ultra had anticipated an Axis attack, and the former commander of the 8th Army—General Claude Auchinleck—set out the basic defensive plan but had included a number of contingency plans for defensive works around Alexandria and Cairo in case Axis armour broke through. After visiting the front lines, Montgomery ordered that these contingency plans be destroyed and emphasised his intention to hold the ground around Alamein at all costs.<sup class="reference" id="cite_ref-14">[15]

In the northern sector (from just south of Ruweisat ridge to the coast), XXX Corps—under LGen William Ramsden and composed of the 9th Australian Division, the South African 1st Division and the 5th Indian Division with 23rd Armoured Brigade in reserve—<sup class="reference" id="cite_ref-Playfair384_15-0">[16] was deployed behind minefields.<sup class="reference" id="cite_ref-FRASER354_16-0">[17]

The New Zealand 2nd Division was deployed to a 5 mi (8.0 km) section of front south of the Ruweisat ridge. This defensive area was known as the "New Zealand Box" and formed the northern end of the XIII Corps sector. Accepting that the featureless southern sector would be very difficult to defend against a determined armoured attack, Montgomery chose for the 12 mi (19 km) of front from the New Zealand box to Qaret el Himeimat on the edge of the Qattara Depression to be lightly held encouraging Rommel to attack at this point. This gap would be mined and wired while the 7th Motor Brigade Group and 4th Light Armoured Brigade of the 7th Armoured Division would cover the minefields, but withdraw when necessary.<sup class="reference" id="cite_ref-17">[18] The New Zealand box therefore formed a corner to the main defenses with its hinge of the higher ground at Alam Nayil.

The attackers would meet the main defensive positions when they swung north and approached the Alam El Halfa ridge, well in the rear of the 8th Army′s front. Here Montgomery chose to entrench the bulk of his heavy/medium tanks (concentrated in 22nd Armoured Brigade) and anti-tank units and await the Axis attack. Behind the British armour, on the high ground to their north east would be two brigades of 44th (Home Counties) Infantry Division and concentrations of divisional and Corps artillery.<sup class="reference" id="cite_ref-18">[19]

The 10th Armoured Division had been refitting in the Nile delta with General Grant tanks with the effective 75 mm (2.95 in) main gun and would reinforce the Alam El Halfa position when available. Most of 8th Armoured Brigade arrived by 30 August<sup class="reference" id="cite_ref-cgsc1_19-0">[20] and took position to manoeuver left of 22nd Armoured Brigade and on the flank of the enemy′s expected advance.<sup class="reference" id="cite_ref-Playfair384_15-1">[16] Once Montgomery had seen Rommel′s dispositions after the initial advance, he released 23rd Armoured Brigade from XXX Corps reserve at the eastern end of Ruweisat Ridge to XIII Corps attached to 10th Armoured Division, and by 13:00 on 31 August they had moved 100 Valentine tanks to fill the gap between 22nd Armoured Brigade and the New Zealanders.<sup class="reference" id="cite_ref-Playfair387_20-0">[21]

[edit] The attack
Further information: Battle of Alam el Halfa order of battleBritish Grant tanks in the Egyptian desert. Before the arrival of the Shermans, these were the best Allied tanks in North Africa.The attack started on the night of 30 August taking advantage of a full moon. From the start, things went wrong for Rommel; the RAF spotted the Axis vehicle concentrations and unleashed several air attacks on them. Fairey Albacores of the Royal Navy dropped flares to illuminate targets for Vickers Wellington medium bombers and for the artillery;<sup class="reference" id="cite_ref-21">[22] also, the minefields that were thought to be thin turned out to be deep. The British units covering the minefields were the two brigades of the 7th Armoured Division (7th Motor and 4th Armoured), whose orders were to inflict maximum casualties before retiring. This they did, and the Axis losses began to rise. They included General Nehring—the Afrika Korps commander—wounded in an air raid, and General Von Bismarck—commander of 21st Panzer Division—killed by a mortar bomb.<sup class="reference" id="cite_ref-FRASER2_22-0">[23]

Despite these difficulties, Rommel′s forces were through the minefields by midday the next day and had wheeled left and were drawn up ready to make the main attack originally scheduled for 06:00.<sup class="reference" id="cite_ref-Playfair386_23-0">[24] The late running of the planned schedule and the continued harassing flank attacks from the 7th Armoured Division had forced them to turn north into Montgomery′s flank further west than originally planned and directly toward the prepared defenses on Alam el Halfa. At 13:00, the 15th Panzer Division set off, followed an hour later by 21st Panzer. The Allied units holding the ridge were the British 22nd Armoured Brigade with 92 Grants and 74 light tanks, supported by anti-tank units with 6-pounder guns and the artillery of the 44th and 2nd New Zealand Divisions.<sup class="reference" id="cite_ref-CARVER3_24-0">[25]

One account indicates that the Germans had approximately 200 gun-armed tanks in the two Panzer divisions, and 240 in the two Italian armoured divisions. The Italian tanks were obsolete models, while the Germans possessed a total of 74 Panzer IIIs with the long 50 mm (1.97 in) gun (Pz.Kpfw III Ausf.J) and a total of 27 Panzer IVs mounting the new long 75 mm gun (Pz.Kpfw IV Ausf.F2). This same account further indicates that the British strength was at 700 tanks at the front, of which 160 were Grants (M3A5 Grant). Only 500 of the British tanks were engaged in the armoured battle, which was brief.<sup class="reference" id="cite_ref-Liddell_Hart_1970_11-1">[12]

As the Panzer Divisions approached the ridge, the Panzer IV F2 tanks opened fire at long range and destroyed several British tanks. The British Grants were handicapped by their hull-mounted guns that prevented them from firing from "hull-down' positions, although the armour-penetrating capabilities of the turret-mounted 37 mm (1.46 in) gun exceeded that of the hull mounted 75 mm gun.<sup class="Template-Fact" style="white-space: nowrap;">[citation needed] When the Germans came into range, they were exposed to the fire of the brigade and their tanks were hard hit. An attempt to outflank the British was thwarted by anti-tank guns and with night beginning to fall and fuel running short because of the delays and heavy consumption over the bad 'going', General Gustav von Vaerst—now commanding the Afrika Korps—ordered the Panzers to pull back. During this engagement, the Germans lost 22 tanks and the British 21.<sup class="reference" id="cite_ref-CARVER4_25-0">[26]

The night brought no respite for the Axis forces, as the Albacore and Wellington bombers returned to the attack, concentrating on the Axis supply lines. This added to Rommel′s logistic difficulties as Allied action had sunk over 50% of the 5,000 long tons (5,100 t) of petrol promised to him by Mussolini.<sup class="reference" id="cite_ref-26">[27] Accordingly, on the following day (1 September), the 21st Panzer Division was inactive (probably because of lack of fuel) and operations were limited to an attack by the 15th Panzer Division toward the eastern flank of the 22nd Armoured Brigade.<sup class="reference" id="cite_ref-Playfair387_20-1">[21] Their attack started at dawn but was quickly stopped by a flank attack from the 8th Armoured Brigade. The Germans suffered little, as the British were under orders to spare their tanks for the coming offensive but they could make no headway either and were heavily shelled.<sup class="reference" id="cite_ref-FRASER3_27-0">[28]

Meanwhile the Italian Littorio and Ariete Armoured Divisions had moved up on the left of the Afrika Korps and the 90th Light Division and elements of Italian X Corps had drawn up to face the southern flank of the New Zealand box.<sup class="reference" id="cite_ref-Playfair387_20-2">[21]

Air raids continued throughout the day and night and on the morning of 2 September, realising his offensive had failed and that staying in the salient would only add to his losses, Rommel decided to withdraw.<sup class="reference" id="cite_ref-CARVER5_28-0">[29]

[edit] Rommel withdraws
In a message to the Oberkommando der Wehrmacht (OKW), Rommel justified his decision to abandon the offensive by the lack of fuel, Allied air superiority and the loss of the element of surprise.<sup class="reference" id="cite_ref-29">[30] On 2 September, the situation continued to deteriorate for the Axis. Armoured cars of the 4/8th Hussars (of the 4th Armoured Brigade) broke into the Axis supply echelons near Himeimat and attacked a group of 300 lorries, destroying 57 of them. As a result, Italian armoured units had to be moved to protect the supply lines and prevent further attacks. An RAF Baltimore. Baltimore and Boston bombers would fly by day and Wellingtons and Albacores by night, thus keeping a constant pressure on the Afrika Korps.The 2nd was not an active day on either side, except in the air, where the Desert Air Force flew 167 bomber and 501 fighter sorties<sup class="reference" id="cite_ref-CARVER5_28-1">[29]

Montgomery realised the Afrika Korps was about to withdraw. He devised offensive plans for 7th Armoured and 2nd New Zealand Divisions, though still under the proviso that they would not incur losses that would jeopardize further offensives. A British Valentine tank in North AfricaWhile the 7th Armoured Division′s operations never got beyond harassment raids, the New Zealander attack was more serious. It involved the experienced 5th New Zealand Brigade and the green 132nd Brigade (under command from 44th Infantry Division), with armoured support, to attack southward across the supply lines of the Afrika Korps and isolate them east of the Allied lines. The attack, dubbed Operation Beresford, commenced at 22:30 on 3 September. The assault by the 5th New Zealand Brigade on the left of the attack inflicted heavy losses on the Italian defenders, and the New Zealanders beat off Axis counter-attacks the next morning.<sup class="reference" id="cite_ref-30">[31] However, the attack by 132nd Brigade was a shambles. They were an hour late arriving at their start line by which time their enemy had been thoroughly roused by diversionary raids by New Zealand 6th Infantry Brigade on their right flank. The brigade commander—Brigadier Robertson—was wounded and the 6th New Zealand Brigade commander, Brigadier Clifton, captured.<sup class="reference" id="cite_ref-Playfair389_31-0">[32] The Valentine tanks of 46 Royal Tank Regiment got lost in the darkness and ended up in a minefield where 12 of them were put out of action. The 90th Light Division dealt fiercely with the 132nd Brigade (who suffered 697 casualties in addition to the 275 casualties suffered by the New Zealanders), without being able to prevent Rommel′s escape.<sup class="reference" id="cite_ref-CARVER7_32-0">[33] The vigorous Axis defence suggested to Freyberg—the New Zealand division commander—that a renewed attack was unlikely to succeed. He therefore advised that the troops should be withdrawn from their very exposed positions and the operation called off. Montgomery and Horrocks agreed and the troops were withdrawn on the night of 4 September.<sup class="reference" id="cite_ref-Playfair389_31-1">[32]

A different account of the night action of the New Zealand infantry brigades is given by Generalleutnant Fritz Bayerlein. It should be noted that 10th Indian Infantry Division were at the time in Cyprus. The position north of the New Zealand Division, however, was held by 5th Indian Infantry Division (it was relieved by 4th Indian Infantry Division on 9 September): An attack by our Luftwaffe against the 10th Indian Div [sic], which was in the assembly area for a counter attack against the centre of the front, caused the units which were assembled there to scatter to the winds. Also, all other attacks launched by other units against our flanks, especially the New Zealanders, were too weak to be able to effect a penetration—they could be repulsed. A night attack conducted against the X Italian Corps resulted in especially high losses for the British. Countless enemy dead lay on the battlefield and 200 prisoners were taken among whom was Gen (sic) Clifton, commanding general of the 6th New Zealand Brigade.

<p style="text-align: right;">— Generalleutnant Fritz Bayerlein<sup class="reference" id="cite_ref-cgsc1_19-1">[20] After this failure against the Folgore Parachute Division, Montgomery decided to refrain from further attacks. The Afrika Korps was allowed to retire, though not without being further harried by the DAF, who carried out 957 sorties in 24 hours.<sup class="reference" id="cite_ref-FR4_33-0">[34] On 5 September, the Axis units were back almost on their starting positions and the battle was over.

[edit] Aftermath and losses
During this battle, the Allies suffered 1,750 casualties, compared to 2,930 for the Axis. The Allies lost more tanks than the Axis but for the first time in this campaign there was no great disproportion in tank losses. Also the constant harassment by the RAF cost the Panzerarmee Afrika many transport vehicles.<sup class="reference" id="cite_ref-Watson14_1-6">[2]

It was the last big offensive undertaken by the Axis in North Africa. Ultimately, it was the superior firepower of the Allies and their mastery of the skies that brought them victory.<sup class="reference" id="cite_ref-Watson14_1-7">[2]

There has been criticism of Montgomery′s leadership during the battle,<sup class="reference" id="cite_ref-CARVER8_34-0">[35] especially his choice to avoid losses, that prevented the British tank formations from finishing off the Afrika Korps, when it was strung out between the minefields and Alam Halfa. Friedrich von Mellenthin in Panzer Battles painted a dramatic picture of Panzer divisions, paralyzed by lack of fuel, under constant bombardment and awaiting a British onslaught.

Montgomery's answer was to point out that the 8th Army was in a process of reformation with the arrival of new, untrained units and wasn′t ready to take the offensive. Nor was his army yet prepared logistically for a 1,600 mi (2,600 km) exploitation and pursuit were they to break through—the problem that had previously caused both sides to fail decisively to end the desert campaign after gaining tactical victory in the field. In addition, Montgomery was keen not to let his own armour waste themselves on futile attacks against Rommel′s anti-tank screen, something that they had frequently done in the past, in the process handing the initiative to the Axis forces. Indeed, as Rommel complained to Kesselring, "The swine isn′t attacking!"<sup class="reference" id="cite_ref-35">[36]

Montgomery′s refusal to exploit his victory allowed him to preserve his forces and build his logistics for the decisive offensive in October that came to be known as the Second Battle of El Alamein.<sup class="reference" id="cite_ref-36">[37]

[edit] See also

 * North African Campaign timeline
 * List of World War II Battles

[edit] Footnotes

 * 1) ^ a b c d Naveh (1997), p. 149
 * 2) ^ a b c d e f g h Watson (2007), p. 14
 * 3) ^ Buffetaut pp.90-91
 * 4) ^ Cox & Grey 2002, p. 102.
 * 5) ^ Playfair Vol. III, p. 379
 * 6) ^ Playfair Vol. III, pp. 338 and 379
 * 7) ^ a b Playfair Vol. III, p. 392
 * 8) ^ Carver p.48
 * 9) ^ Fraser p.351
 * 10) ^ Playfair Vol. III, p. 382
 * 11) ^ Watson p.12
 * 12) ^ a b Liddell Hart, B.H. History of the Second World War. New York: G.P. Putnam's Sons, 1970. Print.
 * 13) ^ a b Fraser pp.355-257
 * 14) ^ Carver p.49
 * 15) ^ Watson p.10
 * 16) ^ a b Playfair Vol. III, p. 384
 * 17) ^ Fraser p.354
 * 18) ^ Fraser pp.354-355
 * 19) ^ Walker, Ronald p. 45
 * 20) ^ a b Roberts and Bayerlein
 * 21) ^ a b c Playfair Vol. III, p. 387
 * 22) ^ Watson p.13
 * 23) ^ Fraser p.358
 * 24) ^ Playfair Vol. III, p. 386
 * 25) ^ Carver p.58
 * 26) ^ Carver p.62
 * 27) ^ Lightbody, Bradley (2004). The Second World War:Ambitions to Nemesis. Routledge. p. 290 pages. ISBN 0-415-22404-7., p. 142
 * 28) ^ Fraser p.359
 * 29) ^ a b Carver p.67
 * 30) ^ Playfair Vol. III, p. 388
 * 31) ^ Barr.N, Pendulum of War: The Three Battles of Alamein, (2005), pp.245-246.
 * 32) ^ a b Playfair Vol. III, p. 389
 * 33) ^ Carver p.70; Playfair.I.S.O, Mediterranean, vol.iii, p.389
 * 34) ^ Buffetaut p. 90
 * 35) ^ Carver p.181
 * 36) ^ Walker, Ronald p. 180
 * 37) ^ Fraser p.360

[edit] References

 * Buffetaut, Yves (1995) (in French). Operation Supercharge-La seconde bataille d'El Alamein. Histoire Et Collections.
 * Carver, Michael (1962). El Alamein. Wordsworth Editions. ISBN 1-84022-220-4.
 * Conetta, Carl; Knight, Charles & Unterseher, Lutz (September 1997). "Defensive Military Structures in Action: Historical Examples". Originally published in Confidence-Building Defense: A Comprehensive Approach to Security & Stability in the New Era, Study Group on Alternative Security Policy and Project on Defense Alternatives, Commonwealth Institute, Cambridge, MA., May 1994. http://www.comw.org/pda/webbtl.htm.
 * Cox and Gray, Sebastian and Peter (2002). Air Power History: Turning Points from Kitty Hawk to Kosovo. Frank Cass. ISBN 0-7146-8257-8.
 * Naveh, Shimon (1997) [1991]. In Pursuit of Military Excellence; The Evolution of Operational Theory. London: Francass. ISBN 0-7146-4727-6.
 * Playfair, Major-General I.S.O.; with Flynn R.N., Captain F.C.; Molony, Brigadier C.J.C. & Gleave, Group Captain T.P. (2004) [1st. pub. HMSO 1960]. Butler, J.R.M. ed. The Mediterranean and Middle East, Volume III: British Fortunes reach their Lowest Ebb (September 1941 to September 1942). History of the Second World War United Kingdom Military Series. Naval & Military Press. ISBN 1-84574-067-X.
 * Fraser, David (1993). Knight's Cross: A Life of Field Marshal Erwin Rommel. London: Harper Collins. p. 601. ISBN 0-00-638384-X.
 * Roberts, Major-General G.P.B.; Bayerlein, Generalleutnant Fritz. "U.S. Combat Studies Institute Battle Report: Alam Halfa". In Basil Liddell Hart. http://www-cgsc.army.mil/carl/resources/csi/hart/hart.asp. Retrieved 2007-11-05.
 * Walker, Ronald (1967). "The Official History of New Zealand in the Second World War 1939–1945". Alam Halfa and Alamein CHAPTER 11 — Summary of the Battle. New Zealand Historical Publications Branch, Wellington. http://www.nzetc.org/tm/scholarly/tei-WH2Alam-c11.html. Retrieved 2007-08-18.
 * Watson, Bruce Allen (2007) [1999]. Exit Rommel. Mechanicsburg PA: StackpoleBooks. ISBN 978-0-8117-3381-6.