Chiang Kai-shek's decision to commit his elite divisions to fight in Shanghai caused his elite units to suffer some sixty percent casualties in the three-month bloodbath. In one single blow, Chiang also lost some 10,000 of the 25,000 junior officers trained by the Whampoa Military Academy between 1929 and 1937, in addition to some tens of thousands of potential military officers. Chiang Kai-shek's Central Army was never to recover from these devastating losses. By the time the 88th Division, arguably the best of these elite divisions, began its defense of Nanjing, it had been reduced to seven thousand men, of whom three thousand were new recruits to replace the losses.