"Now, if that is the distance to the place over there, we have the exact range also for the other point, 7 kilometers and 47 centimeters beyond. The question in my mind is," said the officer, "has it reference to a battery location?"
"Have you figured out the distance of 5.52 kilometers in miles?" asked the captain.
"Yes; it is a trifle over three and a half miles, or to be exact, 18,488 feet," said the officer.
"You see that corresponds within a hundred feet or so of the triangulated measurement we made of the hill," said the captain.
"One thing is sure, however, that if their big battery is on that hill, or near it, they have some way of protecting it, for they are doing as much damage with it as the first day we started in," said the officer addressed.
CHAPTER XII
FINDING THE ENEMY'S BATTERY
"I think it is a very fortunate circumstance that we have found this range mark," said the captain, turning to the boys. "It is a remarkable evidence that your training has been in the right direction. This discovery entitles you to special mention in my report. Take the names of these young men," he said, addressing an officer, "and also the address, so that due credit may be given them."
"Where are you staying?" asked the officer.