"Just what was it?" Bob asked.
"Iss der German brutes by us goin' to come again?" asked Iggy.
"If they do I hope they don't find us as unprepared as the bunch was last night," remarked Jimmy, gloomily enough. "It was a bad piece of business. But it wouldn't have happened if the Huns hadn't known some of the reserves had been pulled away from that sector."
"Were they?" was Bob's question.
"Yes," answered Jimmy, who had acquired considerable of this disquieting information. "Our side was planning a big raid, but not in this immediate neighborhood. On that account the headquarters staff sent for some of our reserves. They were taken off quietly enough, and it was thought the Germans wouldn't get wise to the fact. But they did, and they took a jump over, and got away with it, worse luck!"
"And you say it was because of treachery on the part of someone on our side?" asked Roger.
"That's the story," admitted his chum. "You'll hear the talk as soon as you circulate around a bit. It's a rotten shame, that's what it is!"
"But how did anyone from our side get over to the German lines without being shot—unless he took the part of a spy and put on a German uniform?" asked Bob.
"They didn't go over—they sent signals," went on Jimmy. "And those signals are what gave away the weak spot in our lines."
"Signals!" exclaimed his chums. "What kind?"