Mark I (1916) - UK
The first tank.
Renault FT-17 (1917) - France
First tank with rotating turret and classic configuration.
Vickers Medium Mark I (1924) - UK
First tank with three men turret.
M1931/BT-2 (1931) - US/USSR
First independent (Christie) suspension.
Type 89B I-Go Otsu (1934) - Japan
First diesel tank.
Char B1 (1935) - France
First with shell-proof armor.
PzKpfw II Ausf.D (1938) - Germany
First torsion suspension.

The first tank.
Renault FT-17 (1917) - France

First tank with rotating turret and classic configuration.
Vickers Medium Mark I (1924) - UK

First tank with three men turret.
M1931/BT-2 (1931) - US/USSR

First independent (Christie) suspension.
Type 89B I-Go Otsu (1934) - Japan

First diesel tank.
Char B1 (1935) - France

First with shell-proof armor.
PzKpfw II Ausf.D (1938) - Germany

First torsion suspension.