This is a list of corps serving within the armies of the British Empire during the Second World War. A Corps was either a temporary military formation created for combat, or an "administrative" formation that coordinated specialist military functions across a national military force. A combat Corps was composed of specialist units from various "administrative" Corps from combat arms, combat support arms and combat services. Combat Arms were formation sized units from the Corps of infantry and armour, usually 2 or more divisions in strength. Combat Support Arms were smaller units from the Corps of artillery, engineers, signals, intelligence or reconnaissance. Combat Services were units from the Corps of medicine, general services, ordnance, pioneers, logistics and other more specialized fun