"The 200th Ind.," answered Si, without being able to control his surprise.
"A very good regiment," said the rebel. "What's your company?"
"Co. Q," answered Si.
"Who's your Colonel?"
"Col. Duckworth."
"Who's your Captain?"
"Capt. McGillicuddy."
"All right," said the rebel, with an air of satisfaction. "I asked those questions to make sure you were genuine Yankees. One can't be too careful in my business. I'm in the United States Secret Service, and have to be constantly on the watch to keep it from being played on me by men pretending to be Yankees when they are rebels, and rebels when they are Yankees. I always make it the first point to ask them the names of their officers. I know almost all the officers in command on both sides."
"You in the Secret Service?" exploded the boys.
They were on the point of adding "too," but something whispered to them not to betray Rosenbaum.