An Army Group Royal Artillery (AGRA) was a British Commonwealth military formation type during the Second World War and shortly thereafter.
Corps (plural corps; via French, from the Latin corpus "body") is a term used for several different kinds of organisation.
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
The 21st Army Group was a World War II British headquarters formation, in command of two field armies and other supporting units, consisting primarily of the British Second Army and the First Canadian Army.
The 79th Armoured Division was a specialist armoured division of the British Army created during World War II.