Sentence:  One moment , the road was filled with disciplined troops , marching four by four with a purpose as implacable as death ; the next , a cloud of gun smoke covered a screaming fury of sound , out of which the redcoat <WSD>soldiers</WSD> emerged with their bayonets and their cursing fury . 
Meaning of the word marked with <WSD> tags:  an enlisted man or woman who serves in an army