Smoke grenades

device used for signalling, distraction and concealment, usually in military settings.

American signalling device

thumb|Close up of the Nahverteidigungswaffe at German Tank Museum|Panzermuseum Munster The Nahverteidigungswaffe was a roof mounted, breech-loaded, single shot, multi-purpose, 360° rotating grenade launcher that could fire a variety of ammunition. It was typically found on German tanks such as the Panzer IV, Panther I, Tiger I, and Tiger II from 1944 until the end of the war and was intended to replace three previous devices: the Nebelwurfgerät, the Minenabwurfvorrichtung, and pistol ports.

RDG-2 () is a hand-held smoke grenade of Soviet design.