But the boys would do nothing of the sort, and reported the matter to Captain Black.  The result was that the officers were searched and some valuable papers, containing some future plans of the enemy, were discovered.  The officers were sent to England under a strong guard, as it was felt they were particularly dangerous.

“I suppose Secor and Labenstein are somewhere, plotting to do their worst,” went on Blake.  “Having gone as far as they did, they wouldn’t give up easily, I imagine.  I can understand Labenstein’s acting as he did, but that Secor, a Frenchman, if he really is one, should plot to injure his own country—­that gets me!”

“Same here!  I wonder if we’ll ever see him again—­either of them, for that matter.”

“I hope not I don’t like—­snakes!” exclaimed Blake.

“Yes, that’s what they are—­snakes in the grass,” agreed Joe.  “But I wonder what our next assignment will be.”

“It’s hard to say.  Here comes an orderly now.  Maybe he has some instructions.”

This proved to be the case, the messenger bearing a note from Captain Black, requesting the moving picture boys to get some scenes around the camp when the soldiers were served with their daily rations.

Some German propaganda was being circulated in the United States, Captain Black explained, to the effect that the soldiers in France were being underfed and were most unhappy.  It was said that large losses had taken place in their ranks through starvation.

“We want to nail that lie to the mast!” said the captain; “and I can’t imagine a better way than by making some films showing the boys at their meals.”

“And they are some meals, too!” exclaimed Blake, as he and his chum made ready for the task set them.  “If every soldier in this war had as good grub as our boys, they’d want to keep on fighting.”

Though Blake and Joe were resting at that particular time, it must not be assumed that they did much of that sort of thing.  Of course they were not always on duty.  Moreover, unlike the soldiers, they could do nothing after dark, during which period many raids were made on both sides.  The moving picture business of taking films depended on daylight for its success.  But when they were not filming peaceful scenes in and about the trenches the boys were getting views of tanks, of men drilling, of their games and sports, and now they were to get some pictures of the meals.

As Blake and Joe had remarked, they had neither heard nor seen anything of Secor or Labenstein since they came from England.  The men might have been arrested, but this was hardly likely.

“Even if they were we wouldn’t hear of it,” said Blake.  “But I hope, if they are under arrest, they’ll hold them until we can tell what we know of them.”

“Same here,” agreed Joe.  “But I guess we’ll never see them again.”

Before long, however, his words were recalled to him in a strange manner and under grim circumstances.