“I don’t know,” replied Hal; “but you may be sure he will do anything he can.  He will not desert us.  He is that kind, and I know the kind well.”

“You can bet on that,” Chester agreed.  “He’ll be back before long.”

It was nearing the hour of noon when the cell door again swung open.  Believing that Uncle Billy had returned, the two boys jumped to their feet.  But they were disappointed.  An officer, whose shoulder straps proclaimed him a lieutenant, entered.  Behind him stood the inevitable line of soldiers.

He beckoned the prisoners.  “Follow me!” he commanded.

“Where to?” demanded Lieutenant Anderson.

“General Steinberg desires your presence.”

He stood aside as the captives filed from the cell.  Outside the line of soldiers fell in step behind them.

Our four friends were marched out of the castle and across the field to the army camp.  They were led to a hut rather larger than the rest, which proclaimed it the headquarters of the commanding officer.  They were ushered inside and their military escort fell back.

General Steinberg sat at a table surrounded by several officers of his staff.  He looked up as the prisoners entered, and unconsciously Captain Derevaux saluted.

General Steinberg jumped to his feet.

“So!” he exclaimed.  “A soldier, eh?  And an officer, besides.  I thought so!  What rank, and to what command are you attached?”

Captain Derevaux drew himself up to his full height.

“Captain of French Rifles!” he said defiantly.

“And what are you doing within our lines in civilian clothes, may I ask?” demanded the general, with a sneer.  “Spying, eh?” he continued without waiting for a reply.  “I thought so.  Are your companions also spies?”

“We are not spies,” declared the captain vehemently.  “I was stranded in Berlin and was trying to make my way out of the country so as to join my regiment.”

“And why should we allow you to leave the country and join our foes?  Did you report yourself to the authorities in Berlin when war was declared?”

“No.”

“And why, may I ask?”

“Because I had already received orders to join my regiment, and I did not propose to be detained.”

The general waved him aside and turned to Lieutenant Anderson.

“And you are also an officer, perhaps, eh?” he questioned.

“I am,” replied the lieutenant boldly.  “I hold his British majesty’s commission as a lieutenant of Dragoons.”

“Another spy, eh?”

“No; I am no spy, and you do not dare treat me as one.”

“I don’t?  You shall see.  Stand aside!”

The general turned to Hal and Chester.

“And you,” he said, “you both look over young to be taking the risk of spies.  How do you come to be mixed up in this business?”

Hal explained.

“Why did you not submit to arrest in Angermunde?”