The Oxfordshire and Buckinghamshire Light Infantry was a light infantry regiment of the British Army that existed from 1881 until 1958, serving in the Second Boer War, World War I and World War II.

The regiment was formed as a consequence of the 1881 Childers Reforms, a continuation of the Cardwell Reforms, by the amalgamation of the 43rd (Monmouthshire) Regiment of Foot (Light Infantry) and the 52nd (Oxfordshire) Regiment of Foot (Light Infantry), forming the 1st and 2nd Battalions of the Oxfordshire Light Infantry on 1 July 1881. In 1908, as part of the Haldane Reforms, the regiment's title was altered to become the Oxfordshire and Buckinghamshire Light Infantry, commonly shortened to the Ox and Bucks.

After service in many conflicts and wars, the Ox and Bucks Light Infantry was, in 1948, reduced to a single Regular Army battalion and on 7 November 1958, following Duncan Sandys' 1957 Defence White Paper, it was renamed the 1st Green Jackets (43rd and 52nd), forming part of the Green Jackets Brigade.

Formation The regiment was formed as a consequence of the 1881 Childers Reforms, a continuation of the Cardwell Reforms, by the amalgamation of the 43rd (Monmouthshire) Regiment of Foot (Light Infantry) and the 52nd (Oxfordshire) Regiment of Foot (Light Infantry), forming the 1st and 2nd battalions of the Oxfordshire Light Infantry on 1 July 1881. The former numerical titles of the battalions remained in unofficial usage.Draper, p. 6 As part of the formation of the regiment, the following Volunteer Force and Militia units were placed under command of the regiment:Frederick, pp. 240–1.

3rd (Royal Bucks Militia) Battalion based in High Wycombe 4th (Oxford Militia) Battalion based in Oxford [5th] 1st Volunteer Battalion based in Great Marlow, former 1st Buckinghamshire Rifle Volunteer Corps [6th] 2nd Volunteer Battalion based in Oxford, former 2nd Oxfordshire Rifle Volunteer Corps [7th] 3rd (Oxford University) Volunteer Battalion based at Oxford University, former 1st (Oxford University) Oxfordshire Rifle Volunteer Corps [8th] 4th (Eton College) Volunteer Battalion based at Eton College, former 2nd (Eton College) Buckinghamshire Rifle Volunteer Corps

Operations across the Empire (1881–1914) 1st Battalion The 43rd Foot was based in Burma when it became the 1st Battalion. In 1882 the unit moved to Bangalore, India. In 1887 the battalion returned home, being based in Parkhurst, England. It moved to Kinsale, Ireland in 1893 and, having been based in other parts of Ireland, returned to England in 1898. In December 1899 the Second Boer War began and the 1st Battalion arrived in Southern Africa to take part in it. It saw extensive service in the conflict, including in the relief of the besieged British garrison at Kimberley and in the defeat of the Boers at Paardeberg in February. The war raged on for a further two years; the regiment saw extensive service for the duration of the conflict. The Oxfordshires returned to England in September 1902 with the conclusion of the war, and was stationed at Chatham. It moved to India the following year where it was based until the outbreak of World War I in 1914.

2nd Battalion The 52nd Light Infantry was based in Oxford, England, when it became the 2nd Battalion. This was the 52nd of Waterloo fame who, under the command of Colonel Sir John Colborne, broke a battalion of the Chasseurs of the Imperial Guard. In 1884 it arrived in Gibraltar and the following year the battalion took part in active service for the first time as a 2nd battalion when a detachment under the command of Lieutenant Scott was deployed as mounted infantry in the Nile Expedition. In 1886 it was based in India, where it would remain into the 20th century. During its stay the battalion formed part of the Peshawar column in the Tirah Expedition in the volatile North-West Frontier in 1897; where the battalion saw action in the Khyber Pass, around Koda Khel and Ali Masjid.Draper, p. 77 In late 1902 the battalion transferred from Bombay to Poona, and in 1903 the battalion returned home. It was initially based in Chatham and in 1907 moved to Tidworth, Wiltshire. The battalion was stationed at Albuhera barracks, Aldershot, when World War I commenced.

On 16 October 1908, as part of the Haldane Reforms, the regiment's title was altered to become the Oxfordshire and Buckinghamshire Light Infantry, commonly shortened to the Ox and Bucks. Also in 1908, the Volunteers and Militia were reorganised nationally, with the former becoming the Territorial Force and the latter the Special Reserve; the regiment now had one Reserve battalion and two Territorial battalions.These were the 3rd Battalion (Special Reserve), with the 4th Battalion at St Cross Road in Oxford (since demolished) and the Buckinghamshire Battalion at Oxford Road in Aylesbury (since demolished) (both Territorial Force).Draper, p.11

First World War (1914–18) During the war, the Ox and Bucks raised 12 battalions (17 in all), six of which fought on the Western Front, two in Italy, two in Macedonia and one in Mesopotamia. The regiment won 59 battle honours and four theatre honours. Many gallantry honours were awarded to the Ox and Bucks, including two Victoria Crossesthe most prestigious honour for bravery in the face of the enemythat were awarded to Company Sergeant Major Edward Brooks and Lance-Corporal Alfred Wilcox, both of the 2/4th Battalion. 5,878 officers and men of the Oxfordshire and Buckinghamshire Light Infantry lost their lives during the First World War.

Western Front

In August 1914, the 2nd Ox and Bucks, commanded by Henry Rodolph Davies, arrived on the Western Front, as part of the 5th Infantry Brigade, 2nd Division, I Corps – the 2nd Division was one of the first divisions of the British Expeditionary Force (BEF) to arrive in France. The battalion took part in the first British battle of the war, at Mons, where the British defeated the German forces that they had encountered on 23 August. A combination of German numerical advantage and the French fifth Army's retreat led to the battalion subsequently taking part in the 220-mile retreat, in exceptionally hot weather, that began the following day, not stopping until just on the outskirts of Paris, then halting the German advance at the First Battle of the Marne (5–9 September). The 2nd Ox and Bucks later took part in all the subsidiary battles of the First Battle of Ypres (19 October – 22 November) that saw the heart ripped out of the old Regular Army, with 54,000 casualties being sustained. In the First Battle of Ypres the 2nd Ox and Bucks first engagement with the enemy was on 20 October in an attack on the Passchendaele ridge. The battalion had heavy casualties: four officers killed and five wounded and 143 other ranks killed or wounded. On 31 October the Germans launched a large scale attack against Lieutenant-General Sir Douglas Haig's I Corps in the area of Ypres which commenced with a heavy bombardment followed by a mass infantry attack; two companies of the 2nd Ox and Bucks took part in the defence and subsequent counter-attack which forced the enemy back to their front line. On 11 November the Germans made another attempt to capture Ypres, sending—on the orders of the German Kaiser—the élite Prussian Guard against the British forces. The 2nd Battalion counter-attacked them at Nonne Bosschen wood, preventing their advance and then routing them; almost one hundred years after the 52nd had defeated Napoleon's Imperial Guard at Waterloo. First Ypres was the last major battle of 1914. The 2nd Ox and Bucks sustained 632 casualties during the first five months of the war and by 1915 it was a very different battalion from that which had arrived on the Western Front at the start of the war.

In 1915 trench warfare commenced with both sides developing impregnable defences; leading to high casualties in return for minimal gains. At the Battle of Festubert (9–16 May) – which was launched in support of the French attack south of Vimy Ridge and included the first British night action of the war – the 2nd Ox and Bucks were part of the second wave of the 5th Brigade attack and, during the course of the battle, suffered just under 400 casualties: the largest number the regiment had sustained in a single battle since the Siege of Badajoz over 100 years earlier. The 2nd Ox and Bucks were involved in heavy fighting at Richebourg l'Avoue on 15–16 May. The 2nd Ox and Bucks and other battalions of the regiment also saw action at the Battle of Loos (25 September – 8 October): 2nd Ox and Bucks took part in the subsidiary attack at Givenchy with 263 casualties on 25 September. The Ox and Bucks 5th (Service) Battalion went into the Battle of Loos on 25 September 1915 at a strength of 17 officers and 767 men and only two officers and 180 men survived the battle.Paget, p. 8 The 2nd Battalion took part in the subsequent attack against the Hohenzollern Redoubt (13–19 October). Following the battle of Loos few pre-1914 2nd Ox and Bucks officers remained, they had either become casualties or promoted to take up positions in other battalions. The gallantry awards made to members of the battalion for bravery during the battle of Loos included the award of the Distinguished Conduct Medals to CSM Fred Clare and to Acting Corporal Horace Duester.

In January 1916, the 2nd Ox and Bucks were at Cottes St. Hilaire; the 2nd Division was at that time taking its turn in the corps reserve. The battalion later moved to Bethune and then returned to the Festubert trenches. Lieutenant Colonel Richard Crosse took over command of the 2nd Ox and Bucks on 8 July 1916 and was to lead the battalion for the next three years. The 1/4th Ox and Bucks took part in the first day of the Battle of the Somme on 1 July 1916, in which the British Army suffered over 60,000 casualties – the largest number sustained in a day by the British Army. The battalions of the Ox and Bucks on the Western Front saw extensive service during the Battle of the Somme (1 July – 18 November), suffering heavily, including at Mametz Wood, Pozières and at Ancre, the last major subsidiary battle. On 28 July the 2nd Ox and Bucks moved to front-line trenches near Waterlot farm and sustained heavy casualties at the battle there on 30 July. The 2nd Ox and Bucks fought on the Somme battlefield at Delville Wood, Guillemont and on 13 November in the battle of Beaumont Hamel: a large attack on the Redan Ridge in the battle of the Ancre. The 2nd Ox and Bucks sustained many casualties during the battle of Beaumont Hamel, including Captain Ralph Kite who within the previous 12 months, had been awarded the Military Cross and twice mentioned in despatches.