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 soldiers emerged with their <WSD>bayonets</WSD> and their cursing fury . 
Meaning of the word marked with <WSD> tags:  a knife that can be fixed to the end of a rifle and used as a weapon