Entwicklung Series Entwicklung series, a comprehensive redesign of German armor from small tracked vehicles to a 100-ton super-heavy tank. Only a single E-100 chassis was completed
Type 5 Ho-Ri tank destroyer with a 105 mm cannon and an additional 37 mm gun; exact status unknown
Naval 12 cm SPG; one prototype built with a mounted Type 10 120 mm gun on a Type 97 Chi-Ha chassis
Ka-To 105 mm SP AT gun was a combination of the Type 5 Na-To open top superstructure and the extended hull of the Type 4 Chi-To. Exact stage of development unknown
Type 97 Experimental flamethrower tank; incomplete prototypes. The first version replaced the hull machine gun with a flamethrower. The second version was fitted with two large, elongated fuel tanks and two flamethrowers on each side of the chassis. It utilized an electric flame igniter system.