1st Guards Brigade (United Kingdom)

1st Guards Brigade
Guards Division Insignia.
Active	20 August 1915 – 1919
Country	United Kingdom
Branch	British Army
Type	Infantry
Size	Brigade
Part of	Guards Division
Engagements	First World War Battle of Loos Battle of the Somme Battle of Passchendaele Battle of Cambrai (1917) First Battles of the Somme Second Battles of the Somme Second Battle of Arras Battles of the Hindenburg Line Final Advance in Picardy
Commanders
Notable commanders	George Jeffreys

The 1st Guards Brigade was an infantry brigade of the British Army, formed in the First World War. It was formed in August 1915 by the redesignation of the 4th (Guards) Brigade on its transfer from the 2nd Division to the Guards Division. It served with the Guards Division on the Western Front for the rest of the war.

The 4th Brigade was an infantry brigade of the British Army with a history that stretched back to the Napoleonic Wars. At the outbreak of World War I in August 1914, the 4th Brigade was a regular army formation stationed in London District and assigned to the 2nd Division. It was designated as 4th (Guards) Brigade as it commanded four battalions of Foot Guards.

The brigade was among the first British formations to be sent overseas as part of the British Expeditionary Force (BEF), crossing to France between 11 and 16 August 1914. It served on the Western Front in 1914 and 1915 taking part in the Battle of Mons (23 and 24 August 1914), the First Battle of the Marne (6 – 9 September), the First Battle of the Aisne (13 – 20 September), the First Battle of Ypres (19 October – 30 November), and the Battle of Festubert (15 – 20 May 1915).