Just then the officer of the day approached. Rabig slunk away from the window while Frank resumed his pacing, and the episode ended then and there. At the end of three days Rabig's term expired and he was sent back again to his place in the ranks, somewhat subdued in manner though really unchastened in spirit. His hatred of Frank was unabated and in fact seemed to have taken on extra bitterness since the sharp exchange at the guard-house. He seldom passed Frank without a sneer on his lip or an ugly gleam in his eye, which betrayed the smoldering fires within. Frank, on his part, bore no rancor. His nature was too open and healthy to nurse a grudge, and although he avoided speaking to Rabig, he seldom thought of him except when the exigencies of military duty threw them together. "You're as popular as the smallpox with that gink," said Billy one day, after Rabig had passed them with his usual malignant stare at Frank. "You want to keep your eyes open, Frank," added Tom, who, knowing Rabig better than Billy, distrusted him profoundly. "He's got something up his sleeve." "I don't think it would be safe to be alongside him in the trenches," put in Bart. "Especially on a dark night. It's an easy thing there to slip a bullet into a man you don't like, and charge it up against the Germans." "Oh, shucks!" laughed Frank, "Rabig's pretty bad but he isn't as bad as that." Several weeks went by, weeks of strain and hard work that were rapidly converting the new army into a first-class fighting machine. But "all work and no play makes Jack a dull boy," and the officers saw to it that there was plenty of entertainment for the men when the hard day's work was over. There were improvised vaudeville entertainments and, as there were many actors in the ranks, including some whose names were famous, the performances were really good. Then too, there were boxing matches, which were perhaps the most popular of all. The boys themselves took part in these and there was a good deal of rivalry, all of it good-natured, among the representatives of the various companies and regiments in camp. The Government had been quick to recognize the value of boxing, not only as a physical exercise, but because it aided vastly in the bayonet drill. The two contests closely resembled each other and excellence in one meant excellence in both. There was the same sparring for advantage, feinting, alternate advance and retreat, evading and covering up, attacking and defending. And because of this, every camp had its official boxing instructor and the sport formed part of the regular drill. Great care was taken to avoid any brutal element. The rounds were limited to two minutes each and the men were cautioned against letting go with all their weight. It was a matter of points secured by skill, and it was closely akin to a fencing bout with buttons on the foils to avoid any serious injury.