Full-Track Prime Mover M34: M32B1 removed a-frame and winch. Used as tractor for heavy artillery guns. In service 1944.
M4 Dozer: M4s fitted with dozer blades. Some had turret removed and were used by Engineer Corps.
M4 Mobile Assault Bridge: Double track bridge with a-frame. Small number built.
Mine Exploder T1E3 (M1) "Aunt Jemima": Two roller units each of 5 10' steel discs. 75 built. Used in Normandy and Italy. Most widely used mine exploder. Sometimes a 2nd tank was used to push it.
Mine Exploder T8: Steel plungers carried on a pivoted frame. Beat up and down on the ground as vehicle moved forward. Steering was adversely affect. "Johnnie Walker"
Rocket Launcher T34 Calliope: 60 4-6" rocket tubes mounted above the turret. 2 sets if 12 tubes on bottom. First used by 2nd Armored Division in France. Limited combat.
Mine Exploder T2 Flail: Small number used by US Army in NW Europe.