Sentence:  One moment there was a man in the saddle ; the next a headless horror on a horse that bolted through the redcoat ranks , and during the next <WSD>second</WSD> or two , we all of us fired into the suddenly disorganized column of soldiers . 
Meaning of the word marked with <WSD> tags:  1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites