Sentence:  One moment there was a man in the saddle ; the next a headless horror on a horse that bolted through the <WSD>redcoat</WSD> ranks , and during the next second or two , we all of us fired into the suddenly disorganized column of soldiers . 
Meaning of the word marked with <WSD> tags:  British soldier; so-called because of his red coat (especially during the American Revolution)