Gv. 29 (Type 29)

A Japanese light tank prototype developed during World War II, designed to be a more agile and versatile light tank. It featured a 37mm gun and lighter armor, but was never mass-produced due to wartime production constraints.

Gv. 30 (Type 30)

A Japanese medium tank prototype developed during World War II, designed to be a more powerful and heavily armored medium tank. It featured a 75mm gun and thick armor, but was never mass-produced due to wartime production constraints.

Gv. 31 (Type 31)

A Japanese heavy tank prototype developed during World War II, designed to be a more powerful and heavily armored heavy tank. It featured a 120mm gun and thick armor, but was never mass-produced due to wartime production constraints.

Gv. 32 (Type 32)

A Japanese light tank prototype developed during World War II, designed to be a more agile and versatile light tank. It featured a 47mm gun and lighter armor, but was never mass-produced due to wartime production constraints.

Gv. 33 (Type 33)

A Japanese medium tank prototype developed during World War II, designed to be a more powerful and heavily armored medium tank. It featured a 75mm gun and thick armor, but was never mass-produced due to wartime production constraints.

Gv. 34 (Type 34)

A Japanese heavy tank prototype developed during World War II, designed to be a more powerful and heavily armored heavy tank. It featured a 105mm gun and thick armor, but was never mass-produced due to wartime production constraints.

Gv. 19 (Type 19)

A Japanese heavy tank prototype developed during World War II, designed to be a more powerful and heavily armored heavy tank. It featured a 120mm gun and thick armor, but was never mass-produced due to wartime production constraints.

Gv. 20 (Type 20)

A Japanese light tank prototype developed during World War II, designed to be a more agile and versatile light tank. It featured a 47mm gun and lighter armor, but was never mass-produced due to wartime production constraints.

Gv. 4 (Type 4)

A Japanese medium tank prototype developed during World War II, designed to be a more advanced successor to the Type 3. It featured a larger 75mm gun and thicker armor but was never mass-produced due to wartime production constraints.

Gv. 21 (Type 21)

A Japanese medium tank prototype developed during World War II, designed to be a more powerful and heavily armored medium tank. It featured a 75mm gun and thick armor, but was never mass-produced due to wartime production constraints.