121st Brigade (United Kingdom)

The 121st Brigade was a formation of the British Army during the First World War. It was raised as part of the new army also known as Kitchener's Army and assigned to the 40th Division.

Formation

The infantry battalions did not all serve at once, but all were assigned to the brigade during the war:

• 12th Battalion, Suffolk Regiment
• 13th Battalion, Yorkshire Regiment
• 18th Battalion, Sherwood Foresters
• 22nd Battalion, Middlesex Regiment
• 20th Battalion, Middlesex Regiment
• 21st Battalion, Middlesex Regiment
• 121st Machine Gun Company
• 121st Trench Mortar Battery
• 8th Battalion, Royal Irish Regiment
• 23rd Battalion, Lancashire Fusiliers
• 23rd Battalion, Cheshire Regiment
• 9th Battalion, Worcestershire Regiment