John Crocker

General Sir John Tredinnick Crocker, (4 January 1896 – 9 March 1963) was a senior British Army officer who fought in both world wars. He served as both a private soldier and a junior officer in the First World War, and as a distinguished brigade, division and corps commander during the Second World War, where his most notable role was as General Officer Commanding (GOC) of I Corps during the D-Day landings on 6 June 1944, leading the corps throughout the subsequent campaign in Western Europe until Victory in Europe Day (VE-Day) just over eleven months later.

After the war was over Crocker became Commander-in-Chief (C-in-C) of Middle East Land Forces and Adjutant-General to the Forces, the second most senior officer on the Army Council. An outstanding soldier, Crocker was highly regarded by both his superiors, most notably Field Marshal The Viscount Alanbrooke, and his subordinates, including the future Field Marshal Lord Carver, but he remains relatively unknown.

Early life

As related in Delaney's book "Corps Commanders":

Great War

Over a year after the outbreak of the First World War, which began in August 1914, Crocker enlisted into the British Army as a private soldier in the Artists Rifles, a training corps for potential officers, in November 1915. He was commissioned as a temporary second lieutenant into the Machine Gun Corps (MGC) on 26 January 1917. He had a distinguished career in the war and in April and July 1918 was awarded, respectively, the Military Cross (MC) and Distinguished Service Order (DSO). After training at the Machine Gun School at Grantham, Lincolnshire, Crocker joined the 174th Machine Gun Company, part of the 59th (2nd North Midland) Division, a Territorial Force (TF) formation then serving in the trenches of the Western Front as part of the British Expeditionary Force (BEF). He fought with his company, which in early March 1918 became part of the 59th Machine Gun Battalion, in the Battle of Passchendaele (also known as the Third Battle of Ypres) in mid-1917 and in the German Army's Spring Offensives of 1918. He was promoted to temporary rank of lieutenant on 26 July 1918.

The citation for his MC award, published in the official ''London Gazette'' reads:

The citation for the DSO reads:

He continued to serve on the Western Front, fighting in the Hundred Days Offensive, until the war came to an end on 11 November 1918 with the signing of the Armistice with Germany.

Between the wars

After the war, Crocker left the army to train as a solicitor. However, he did not enjoy his new profession and returned to soldiering as an infantry officer in the Middlesex Regiment (Duke of Cambridge's Own) in the Regular Army. His rank of lieutenant was confirmed on 16 December 1920 (with seniority backdated to 20 December 1919), the same year of his marriage to Hilda Mitchell; they had a daughter, Roberta, in 1921 and a son, Wilfrid, in 1923. From 13 January 1922 Crocker was seconded to the Royal Tank Corps (later the Royal Tank Regiment) to specialise in the then new field of armoured warfare. His secondment became a permanent transfer in August 1923 (backdated to June 1919).

He then went to India, where he attended the Staff College, Quetta from 1928 to 1929. Among his fellow classmates there were Douglas Gracey, Colin Gubbins, Henry Lowrie Davies, along with George Alan Vasey of the Australian Army and E. L. M. Burns of the Canadian Army, all of whom later become general officers. He was an excellent student there, with his superiors noting his "strong and independent character". He also earned a rare A-grade, which marked him as an "officer of exceptional merit and outstanding ability". After graduating from Quetta, he then held a number of both field and staff posts including brigade major to Brigadier Percy Hobart's 1st Tank Brigade and General Staff Officer Grade 1 (GSO1) to Major-General Alan Brooke when the latter was commanding the Mobile Division (later the 1st Armoured Division). He also had a period of secondment to the Royal Tank School in India from September 1925. He was promoted to captain in April 1929.

Promotion in the inter-war army was slow, and Crocker's advancement was evidenced by a succession of brevet ranks: brevet major on 1 January 1935, brevet lieutenant colonel on 1 July 1936 and brevet colonel on 1 February 1938. However, his permanent rank caught up when he was promoted to colonel on 6 August 1938 (with seniority backdated to 1 February 1938). Crocker lived in Kenya from March of 1938 until August of 1939. By the time the Second World War began in September 1939 he was a GSO1 staff officer in Southern Command.

Second World War

France and England

Crocker was not to remain there long, however, as on 21 April 1940 he was promoted to the acting rank of brigadier and was appointed to command of the 3rd Armoured Brigade in place of Vyvyan Pope. The brigade formed part of Major-General Roger Evans's 1st Armoured Division (formerly the Mobile Division), then serving in England but preparing to move to France. Crocker's brigade was depleted as the British Expeditionary Force (BEF) was expelled from the continent during the Battle of France in May–June 1940. Landed at Cherbourg as the rest of the BEF retreated to Dunkirk in late May, the division unsuccessfully attacked the German bridgeheads over the River Somme before returning to Cherbourg where the remnants (including the brigade's last 13 tanks) were evacuated. Crocker and his brigade were evacuated in mid-June, Crocker himself returning with Lieutenant-General James Marshall-Cornwall on the last ship.

Back in Britain, where he was to remain for almost three years before seeing action again, Crocker initially remained in command of the brigade, which had suffered especially heavy tank losses in France, and was then serving in South East England awaiting a German invasion and training to repel it. However, on 18 September 1940, he was promoted to the acting rank of Major-General at the relatively young age of just forty-four, and became General Officer Commanding (GOC) of the newly created 6th Armoured Division. Nine days later Crocker was made a Commander of the Order of the British Empire (CBE) for his services in France. Crocker's new division, initially composed of the 20th and 26th Armoured Brigades, along with the 6th Support Group and other supporting units, was formed in Southern Command and, under its perfectionist GOC, trained intensively, with Crocker ensuring that all ranks knew their jobs before moving on to large-scale exercises. The division was moved from Southern Command, where it trained throughout the winter of 1940, to Eastern Command in late February 1941.

Crocker continued training his division for the next several months. However, in mid-October 1941 Crocker, who had by now commanded his division for just over a year, relinquished command of the division to Major-General Herbert Lumsden upon being selected to command the 2nd Armoured Group in Home Forces. The Armoured Groups were the brainchild of Major-General Giffard Martel, the Commander Royal Armoured Corps (CRAC), and were set up following his advice with the intention of commanding all the armoured formations in the United Kingdom. His rank of major-general was made temporary on 22 October 1941. The idea was short-lived and he was not to remain there long, as on 16 March 1942 Crocker was promoted to the acting rank of lieutenant-general and was given command of XI Corps, taking over from Lieutenant-General Noel Irwin, who was being posted to command IV Corps in the Mediterranean theatre. Aged just forty-six, this made Crocker one of the youngest corps commanders in the British Army. It is quite probable that Alan Brooke, who still thought highly of Crocker and was now Chief of the Imperial General Staff (CIGS), secured for him his new appointment. Crocker's new command, which had Harold Morgan's 45th, Evelyn Barker's 54th (East Anglian) and Eric Miles's 56th (London) Infantry Divisions, along with the 21st Army Tank Brigade, under command, was based in East Anglia, where it had responsibility for its defence in the event of an invasion, and was serving under Eastern Command.

North Africa

Again, Crocker's appointment was not destined to last long as, in September, he relinquished command of XI Corps over to Lieutenant-General Gerard Bucknall, and took command of IX Corps District from Lieutenant-General Francis Nosworthy. The corps, with Gordon MacMillan (later a distinguished divisional commander and full general) as its Brigadier General Staff (BGS), was then stationed in Northern England under Northern Command, with responsibility for Durham, Northumberland, and the North Riding of Yorkshire. Crocker's rank of major-general was made permanent on 4 December 1942 (with seniority backdated to 16 November 1941). On 16 March 1943 his rank of lieutenant-general was made temporary. In September IX Corps District was mobilised to become a field force formation, was redesignated as IX Corps once again, and was assigned to the newly created British First Army. Commanded throughout its existence by Lieutenant-General Kenneth Anderson, the First Army was formed to be the parent formation for the Allied forces preparing to invade French North Africa as part of Operation Torch. Lieutenant-General Charles Allfrey's V Corps formed the other half of the British contingent of the First Army and saw bitter fighting in the early stages of the Tunisian campaign towards the end of 1942 and in early 1943.

Together with his corps HQ, Crocker departed for North Africa in the spring of 1943, with his HQ becoming operational on 24 March 1943. He took under command his old 6th Armoured Division, now under Major-General Charles Keightley, along with the 46th Infantry Division, under Major-General Harold Freeman-Attwood, and Major-General Raymond Briggs's 1st Armoured Division, which had been transferred over from the British Eighth Army. Crocker's first battle on 8 April was an attempt to cut off the retreating Italian First Army, and he ordered Keightkey's 6th Armoured Division to take the Fondouk Pass but he majorly underestimated the strength of the Italian defences there. Also under command for the operation was the U.S. 34th Infantry Division, under Major General Charles W. Ryder, which Crocker ordered to seize a key position to the right of the pass. Elements of Philip Roberts's 26th Armoured Brigade, part of the 6th Armoured Division, cut across the Americans' line of attack and caused a considerable amount of confusion. In addition, Crocker's handling of his infantry was also thought to be somewhat poor. Although the British armour did eventually break through, the Italians had by now escaped the trap. Crocker was later very critical of the Americans, which caused upset at Allied Forces Headquarters (AFHQ) and infuriating General Dwight D. Eisenhower, the Supreme Allied Commander in North Africa.

The campaign continued on, with the Allies slowly tightening the noose over the Axis forces, who were still fighting harder than ever. Crocker's IX Corps was involved in heavy fighting during the latter stages of the fighting, and managed to capture two key features, Selchet el Kourizia and Two Tree Hill, on 24 April, but despite this, IX Corps still failed to break through into the Tunis Plain. On 27 April, Crocker was wounded in a training accident, during a demonstration of a PIAT (Projector, Infantry, Anti Tank) anti-tank weapon, shortly before the final battle for Tunis and saw no further action in North Africa. A piece of shrapnel had entered Crocker's upper chest. Command of IX Corps passed temporarily to Lieutenant-General Brian Horrocks, who transferred over from the British Eighth Army's X Corps. The war in North Africa came to an end soon afterwards, with the surrender of almost 250,000 Germans and Italians. Crocker was, nonetheless, appointed a Companion of the Order of the Bath on 5 August 1943 for his command in Tunisia, and General Sir Harold Alexander, commander of the Allied 18th Army Group (which controlled both the British First and Eighth Armies), believed Crocker to have performed well throughout his relatively brief time in action.

North-western Europe

Crocker returned to England in May after his IX Corps HQ was disbanded and he remained temporarily unemployed. On his return to service in August he was, upon the recommendation of Alexander to Brooke, given command of I Corps in early August. Crocker took over from Lieutenant-General Gerard Bucknall, who had requested demotion to temporary major-general to command a division overseas.

Crocker's I Corps was to form part of the British Second Army, then under his former army commander in North Africa, Lieutenant-General Sir Kenneth Anderson (but replaced in January 1944 by Lieutenant-General Miles Dempsey), training for Operation Overlord, the Allied invasion of Northern France. Crocker was to aided throughout by his BGS, Philip Balfour. Despite Crocker's background in armoured warfare, I Corps was predominantly an infantry formation, but General Sir Bernard Montgomery, the Allied Land Forces Commander for D Day and the battle of Normandy 21st Army Group, had confidence in Crocker's organisational skills and assigned I Corps the difficult task of capturing the city of Caen

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