North Korean planners enlarged their force in anticipation of a new offensive. The KPA, originally numbering 10 divisions in two corps, was enlarged to 14 divisions with several independent brigades. The new troops were brought in from reserve forces based in North Korea. Marshal Choe Yong Gun served as deputy commander of the KPA, with General Kim Chaek in charge of the Front Headquarters. Beneath them were the II Corps in the east and I Corps in the west. II Corps controlled the KPA 10th, 2nd, 4th, 9th, 7th, and 6th Divisions as well as the 105th Armored Division, with the 16th Armored Brigade and 104th Security Brigade in support. I Corps commanded the 3rd, 13th, 1st, 8th, 15th, 12th, and 5th Divisions with the 17th Armored Brigade in support. This force numbered approximately 97,850 men, although a third of it comprised raw recruits or forced conscripts from South Korea, and lacked weapons and equipment. By August 31 they were facing a UN force of 120,000 combat troops plus 60,000 support troops.