 Complete the following phrase:  The T-26 and BT were the main tanks of the Red Armys armoured forces during the interwar period. The T-26 was the most important tank of the Spanish Civil War and played a significant role during the Battle of Lake Khasan in 1938, as well as in the Winter War in 193940. Though nearly obsolete by the beginning of World War II, the T-26 was the most numerous tank in the Red Armys armoured force during the 