This LVT-4 Buffalo Amtrac was at the Tank Museum at Bovington.
The Landing Vehicle Tracked (LVT) is an amphibious warfare vehicle and amphibious landing craft, introduced by the United States Navy. The Marine Corps and Army used several LVT models during World War II. Five hundred were provided to the British Army.
Originally intended solely as cargo carriers for ship to shore operations, they evolved into assault troop and fire support vehicles.