Kabiskoy fought in World War II from October 1941. He became a Lavochkin-Gorbunov-Gudkov LaGG-3 pilot in the 721st Fighter Aviation Regiment. The regiment provided air defense for Gorky. In December it moved to provide air defense in the Rybinsk area. In early July 1942, the regiment was moved to the Bryansk Front and Kabiskoy took part in the fought in the unsuccessful defense of Voronezh. On 21 October 1942, he was escorting 14 Il-2s over the Kursk airfield when he was attacked by five Bf 109s. Kabiskoy shot down one, enabling the Il-2s to perform their mission. For his actions Kabiskoy received thanks from the commander of the 15th Air Army. Between January and February 1943 he fought in the operation to retake Voronezh. While with the Bryansk Front Kabiskoy shot down two Messerschmitt Bf 109 fighters and two Junkers Ju 88 bombers. On 23 February, Kabiskoy and his wingman shot down an Fw 190, preventing eight Il-2s of the 217th Attack Aviation Regiment from suffering any losses. On 27 February, Kabiskoy led the fighter escort for an Ilyushin Il-2 attack on the Oryol Western airfield, which reportedly destroyed 30 Ju 88s. For his performance of the escort Kabiskoy was thanked by the commander of the 15th Air Army. In July and August 1943 Kabiskoy participated in the Battle of Kursk and the subsequent Operation Kutuzov. On 5 July he shot down an Fw 190 while escorting eight Il-2s, which were attacked by 6 Fw 190s. His wingman claimed another Fw 190. On 11 July, Kabiskoy received the Order of the Patriotic War 1st class. In aerial combat over the Kursk bulge, Kabiskoy shot down another Ju 88 and two Focke-Wulf Fw 190 fighters while flying the Lavochkin La-5.