Original sentence: By the evening of April 23 the Commonwealth 27th and 29th Brigades were facing the Chinese 118th Division.The United Nations positions were initially overrun by the People's 118th Brigade of the People's Volunteer Army, which, with vast superiority in numbers, attacked on a broad front.The initial Chinese attack at Kapyong engaged the 3rd Battalion, Royal Australian Regiment until the Australians retreated from their positions on Hill 504
Edited sentence: By the evening of April 23 the Australian 27th and 29th Brigades were facing the Chinese 118th Division.The allied positions were initially overrun by the  People's 118th Brigade of the People's Volunteer Army, which, with vast superiority in numbers, attacked on a broad front.The initial Chinese attack at Kapyong engaged the 3rd Royal Australian Regiment until the Australians retreated from their positions on Hill 504