The KPA 7th Division withdrew from south of the Nam River while the 6th Division sideslipped elements to cover the entire front. Covered by the 6th Division, the 7th had crossed to the north side of the Nam River by the morning of September 19. Then the KPA 6th Division withdrew from its positions on Sobuk-san. The US units rapidly pursued them north, passing over the Battle Mountain positions, which were no longer of strategic importance. Aftermath The US 5th RCT suffered 269 killed, 573 wounded and four missing during its battles at the Pusan Perimeter, most of these at Masan. The 24th Infantry suffered 267 killed, 796 wounded, one captured and two missing during its time at Pusan Perimeter, however these figures are split between the portions of the regiment which fought at Battle Mountain, which accounted for about 450 of those wounded and 150 of those killed, and those which fought in Haman after August 31. The 65th Engineer Battalion, supporting the 24th Infantry, suffered 27 killed, 75 wounded. The KPA suffered heavily in the fight, and most became casualties in the attack. By mid-September, the KPA 7th Division was reduced to just 4,000 men, a loss of 6,000 from when it was committed to the perimeter. Only 2,000 from the KPA 6th Division returned to North Korea, a loss of 80 percent of its strength. Large groups of troops from the divisions were captured as they attempted to return to North Korea, including up to 3,000 soldiers. The attacking force of over 20,000 had been reduced to only 6,000 by the end of the fights at Masan. Desertion had continued to be a problem for the 24th Infantry, a de facto segregated unit. Statistics compiled by the Eighth Army found the 25th Infantry Division had to detain 116 deserters from the 25th Infantry throughout August, compared to 15 from the 27th Infantry and 12 from the 35th Infantry. The regiment had already been criticized for its poor performance at the Battle of Sangju several weeks earlier. In late August, Kean began investigating the unit's behavior, and found its poor performance was starting to bring other units of the division down as well. Kean considered the regiment a weak link in the chain, and after its poor performance at the battles of Battle Mountain and Haman, he suggested to Walker that the regiment be disbanded and its troops