"As a rule they let men bring in the wounded," said Rob. "But sometimes a nurse is allowed to go about trying to help the poor fellows as best she can until such time as a stretcher can reach them. Most of them are parched with thirst, and what they ask for first of all is a drink of water."

"I might do that much, anyway," Tubby was heard to mutter to himself, "if only I thought I could stand the terrible sights. You know, seeing blood always used to make me feel faint-like. But then a scout ought to overcome that weakness."

Possibly it may have been something in what Tubby said that gave Merritt his brilliant idea, for he immediately whirled upon the patrol leader, and exclaimed:

"Rob, why couldn't we ask them to take us along, and let us do what we can to help? As scouts we know something about taking care of wounds, you remember. Why, didn't that officer compliment us on the way we looked after his men, and the German spy they'd captured? Rob, see if we could do it, won't you? It might be a terrible experience for us; but I feel like I'd be better satisfied if I could lend a helping hand here."

The first of the three army ambulances had by this time come close to the boys. Attracted by their khaki uniforms, and possibly their bright eager faces, the man who was driving held up his team. A woman of middle-age, garbed as a nurse, jumped to the ground, and approached the boys. They saw that undoubtedly she must be the one in charge of the Red Cross detachment.

At sight of the little American flag which Tubby wore on the lapel of his coat her eyes glistened.

"That is a glorious sight to my eyes in this foreign land," she told them, "for I, too, am American-born. My profession is that of a trained nurse. A wealthy patient I brought abroad died in Antwerp; and as the war had broken out I determined to offer my services to the Government, so that I was immediately given a position of trust and responsibility. We are short-handed with men, you can see. I happen to know what Boy Scouts over in America have to learn about taking care of wounded persons. It is a terrible thing to ask, but this is a case of necessity. Would you be willing to help us out; and do you think you could stand the awful sights and sounds of the battlefield?"

Rob and Merritt exchanged glances; while their flushed faces told the nurse what their answer would be, even before they spoke a single word.

"We were just wondering whether you would let us join you," Rob said quickly, "for we want to do something to help those poor fellows over there. Yes, if you can make room for us aboard your ambulance we'll gladly go along."

Poor Tubby had lost all his color. He was as white as a ghost; but with tightly shut teeth he pushed up, to allow the nurse to fasten a bit of muslin, stamped with a vivid red cross, upon his left arm, and then he climbed into the ambulance.