In 1944, Jabiyev graduated from courses for junior lieutenants. He became a platoon commander in the 806th Rifle Regiment of the 235th Rifle Division. He fought in the Battle of Königsberg in April 1945. On 6 April, Jabiyev's platoon crossed the moat of Fort Five. The platoon cleared mines from the approaches, then blew up the wall and broke into the fort. The fighting lasted for days. On 8 April, Jabiyev reportedly raised the red flag on the main tower of the fort. He was wounded, but remained on the front, taking over command of the company. After the fort had been captured Jabiyev went to the field hospital. In subsequent street fighting in the city, the platoon was reported to have stormed several buildings, destroyed several German firing points, killed 100 German soldiers, and captured a large amount of equipment. Jabiyev reportedly killed eight German soldiers and captured thirteen. On 9 April, he was awarded the Order of the Red Banner for his actions on 6 April. On 19 April, he was awarded the title Hero of the Soviet Union and the Order of Lenin.