The 20th Armoured Brigade Combat Team, previously the 20th Armoured Infantry Brigade, is an armoured infantry brigade formation of the British Army, currently headquartered at Wing Barracks, Bulford, Wiltshire, as part of the 3rd Division.

The 4th Infantry Division was a regular infantry division of the British Army with a very long history, seeing active service in the Peninsular War and Waterloo Campaign, the Crimean and Boer Wars and both World Wars. It was disbanded after the Second World War and reformed in the 1950s as an armoured formation before being disbanded and reformed again and finally disbanded on 1 January 2012.