He has since been dubbed "the human torpedo" and his actions are studied in many air combat textbooks, BTA recalls. Although there were 36 Bulgarian aircraft in the bombing raid and the enemy had about 200, the Bulgarian squadron entered the air battle, shot down three bombers and seven enemy fighters and managed to delay the air attack on Sofia. Officers Dimitar Spisarevski and Georgi Kyumurdzhiev were killed in action. Spisarevski was posthumously awarded the Order of Valour and promoted to the rank of Colonel.