The 146th Infantry Brigade was an infantry brigade formation of the British Army, part of the Territorial Force with the 49th Infantry Division. The brigade saw active service during both the First and the Second World Wars, and during the early part of the Cold War. The brigade was active from 1908 until 1967 when it was finally disbanded. The brigade was reformed in 1983, though with a much smaller and insignificant role before finally disbanding again in 1993.

The 49th Infantry Division was an infantry division of the British Army. The division fought in the First World War in the trenches of the Western Front, in the fields of France and Flanders. During the Second World War, the division fought in the Norwegian Campaign and in North-western Europe. After the Second World War, it was disbanded in 1946, then reformed in 1947. It remained with Northern Command until finally disbanded in 1967.