The 3rd Infantry Brigade was a Regular Army infantry brigade of the British Army, part of the 1st Infantry Division. Originally formed in 1809, during the Peninsular War, the brigade had a long history, seeing action in the Second Anglo-Afghan War, and during both the First and the Second World Wars. Formation The 1st Division was formed during the Peninsular War in Spain and Portugal, part of the army commanded by General Arthur Wellesley, later 1st Duke of Wellington. In 1814, the 3rd brigade took part in the Battle of New Orleans, commanded by Lt. Gen. John Keane. It also took part in the Battle of Ali Masjid in November 1878 during the Second Anglo-Afghan War. As the Second Boer War ended in 1902 the army was restructured, and a 2nd Infantry division was established permanently as part of the 1st Army Corps, comprising the 3rd and 4th Infantry Brigades. First World War The brigade saw service during the First World War as part of the British Expeditionary Force on the Western Front. Order of battle The 3rd Brigade was constituted as follows during the war: 1st Battalion, Queen's Royal Regiment (West Surrey) (left November 1914) 1st Battalion, South Wales Borderers 1st Battalion, Gloucestershire Regiment 2nd Battalion, Welch Regiment 2nd Battalion, Royal Munster Fusiliers (from November 1914 until February 1918) 1/4th (Denbighshire) Battalion, Royal Welch Fusiliers (from November 1914 until September 1915) 1/6th (Glamorgan) Battalion, Welsh Regiment (from October 1915 until it became the divisional pioneer battalion in May 1916) 1/9th Battalion, King's Regiment (Liverpool) (November 1915 to January 1916) 3rd Trench Mortar Battery (formed 27 November 1915) 3rd Machine Gun Company, Machine Gun Corps (formed 26 January 1916, moved to 1st Battalion, Machine Gun Corps 28 February 1918) Commanders The following officers commanded 3rd Brigade during the First World War: Brigadier-General H. J. S. Landon (At mobilization) Colonel A. C. Lovett (1 November 1914 - acting) Brigadier-General R. H. K. Butler (22 November 1914) Brigadier-General H. R. Davies (21 February 1915) Brigadier-General G. S. G. Craufurd (19 November 1916) Brigadier-General R. C. A. McCalmont (3 March 1917) Brigadier-General R. B. Barker (18 November 1917) Brigadier-General H. H. S. Morant (23 January 1918) Brigadier General Sir W. A. I. Kay, Bt. (23 May 1918) Brigadier-General J. V. Campbell (4 October 1918 - temporary) Brigadier-General E. St. G. Aubyn (6 October 1918) Between the wars Between the wars the brigade, now