Although Duplex Drive allowed the landing craft to release the tank farther from shore, the alternative deep wading gear permitted a tank to drive partially or completely underwater on the sea floor rather than swim. Deep wading Churchills took part in the 1942 Battle of Dieppe, and also operated during the D-Day assault. These tanks were given waterproofed hulls and air intake and exhaust trunking to allow them to come ashore from shallow water. Tall ducts extended from the engine deck to above the turret top and they needed to stay above water. The front duct was the air intake for the engine, the rear duct vented the exhaust. This device saw use in many amphibious operations, it was also used on light tanks and tank destroyers. The US had similar devices for trucks and jeeps.