154th Infantry Brigade was a formation of Britain's Territorial Force/Territorial Army that was part of 51st (Highland) Division in both World Wars. From its origins in the 19th Century Volunteer Force it was based in Stirling and was composed of Highland battalions. It served on the Western Front in World War I, and after it escaped from France early in World War II it was reformed from its 2nd Line and saw action in North Africa, Sicily and North West Europe. It continued serving postwar until the reduction of the Territorial Army in the 1960s.

The 51st (Highland) Division was an infantry division of the British Army that fought on the Western Front in France during the First World War from 1915 to 1918. The division was raised in 1908, upon the creation of the Territorial Force, as the Highland Division and later 51st (Highland) Division from 1915. The division's insignia was a stylised 'HD' inside a red circle. Early doubts about the division's performance earned it the nickname of "Harper's Duds" after the name of its commander, Major-General George Harper although they would go on to gain a fearsome reputation with the Allies and Germans.