Sentence:  bursting from the lips of a charging cavalry trooper was the last sound heard on this earth by untold numbers of Cheyennes , Sioux and <WSD>Apaches</WSD> , Mexican banditos under Pancho Villa , Japanese in the South Pacific , and Chinese and North Korean Communists in Korea . 
Meaning of the word marked with <WSD> tags:  any member of Athapaskan tribes that migrated to the southwestern desert (from Arizona to Texas and south into Mexico); fought a losing battle from 1861 to 1886 with the United States and were resettled in Oklahoma