“But, but——” began General Tromp in some confusion.

“Order a halt, sir!” commanded General Joffre sternly. “Or,” as he saw that General Tromp still hesitated, “shall I do it myself?”

General Tromp turned and gave the command to one of his staff, who immediately dashed away. A moment and a bugle rang out, and the great army came to a pause.

“Now, sir,” said General Joffre to General Tromp, “you will please dismiss your staff.”

Without a word General Tromp turned and gave the necessary order. A moment later and the four, General Joffre, General Tromp, Hal and Chester, were alone together.

“What is the meaning of this, sir?” demanded General Tromp, with some dignity.

“The meaning, General Tromp,” said General Joffre calmly, “is that you are a traitor!”

General Tromp started back, and his hand went up before his face as if to ward off a blow.

“What!” he cried in well simulated surprise. “Have a care, sir. I shall allow no such insults, even though you are my superior officer.”