The Denison smock was a coverall jacket issued to Special Operations Executive (SOE) agents, the Parachute Regiment, the Glider Pilot Regiment, Air Landing Regiments, Air Observation Post Squadrons, Commando units, and other Commonwealth airborne units, to wear over their Battle Dress uniform during the Second World War. The garment was also issued as standard to the scout and sniper platoons of line infantry battalions.