Comparing: Universal Carrier 2-pdr vs. Panzerjäger I vs. AT-1

The Universal Carrier was developed during the interwar period and was the main armored personnel carrier used by British Commonwealth forces. A total of 90,000 vehicles were produced from 1937 through 1945. Versions of the Universal Carriers were used for transporting personnel and equipment, as machine gun platforms, and for reconnaissance purposes. In 1940, a variant with a 40-mm anti-tank gun was developed.

Development of the Panzerjäger I, the German tank destroyer, started in 1939 based on the Panzerkampfwagen I Ausf. B. Initially, the 37-mm Pak 36 gun was mounted on the chassis of the Panzerkampfwagen I Ausf. B. However, during the invasion of Poland, it was revealed that the gun was not effective against new vehicles. After Germany captured Czechoslovakia in 1940, the 47-mm Pak 36(t) L/43.4 (Škoda 47-mm A-5 KP ÚV vz. 38 Model A5) gun was mounted on the tank destroyer. A total of 202 vehicles were manufactured and saw action until 1943.

Experimental self-propelled gun on the T-26 basis. Several vehicles and eight armored hulls were built. Never saw mass production.