"On our way to Paris," said Alfred.
"But where did you get the uniforms?" asked the officer.
"Why, we've been in the Belgian army, and were in several fights," said Ralph proudly.
The lieutenant's face brightened into a smile, which quickly changed to one of pain. An ambulance stopped alongside with startling suddenness, for the boys had been too busy to notice that the watchers at the hangars had signaled for assistance. The men were carefully carried to the van, and as they were about to start the lieutenant motioned to the doctor in charge, and said:
"I want the boys to come along with us."
CHAPTER II
IN THE AVIATION CAMP
Once inside the ambulance the boys had an opportunity to watch the doctors, as they removed the clothing from the men, and began a search for the location and nature of the injuries. It was a gratification to be able to assist in this work. Jack's legs were both broken, and the lieutenant's chest, back and right arm were bruised and clotted with blood.