Percival and Wainwright then returned together to the Philippines to witness the surrender of the Japanese army there, which in a twist of fate was commanded by General Yamashita. Yamashita was momentarily surprised to see his former captive at the ceremony; on this occasion Percival refused to shake Yamashita's hand, angered by the mistreatment of POWs in Singapore. The flag carried by Percival's party on the way to Bukit Timah was also a witness to this reversal of fortunes, being flown when the Japanese formally surrendered Singapore back to Lord Louis Mountbatten.