This redesigned form of the amphibian support vehicle LVT-(A) 1 was developed the American Marines. During numerous actions during the Pacific Campaign, the Marines became aware of the need for a car more greatly armed than its predecessor which had a 37 MM cannon. This improvement ended up being necessary to better counteract japan fortifications and tanks which expanded in number whilst the War progressed. Designed with a brand new tower housing a short 75 MM howitzer, this vehicle had been popular in battles for the conquest of Iwo Jima and Okinawa.