The kind of tank design that appeared in World War I. They were designed to cross the cratered wastelands and trenches created by the fighting. The crews fought

The kind of tank design that appeared in World War I. They were designed to cross the cratered wastelands and trenches created by the fighting. The crews fought from gun ports and mounted cannons/machineguns, rather than a rotating turret. Examples: - https://en.wikipedia.org/wiki/Mark_IV_tank https://en.wikipedia.org/wiki/Mark_IV_tank - https://en.wikipedia.org/wiki/Mark_V_tank https://en.wikipedia.org/wiki/Mark_V_tank