[957]. For problems exemplifying this system of instruction, see [Par. 1017].
The instruction may be varied a little by testing the squad leaders in their knowledge of map reading by asking, from time to time during the solution of the problem, such questions as these:
Captain: Corporal Smith, you are standing on Lone Hill (See [Elementary Map]), facing north. Tell me what you see?
Corporal: The hill slopes off steeply in front of me, about eighty feet down to the bottom land. A spur of the hill runs off on my right three-fourths of a mile to the north. Another runs off on my left the same distance to the west. Between these two spurs, down in front of me, is an almost level valley, extending about a mile to my right front, where a hill cuts off my view. To my left front it is level as far as I can see. A quarter of a mile in front of me is a big pond, down in the valley, and I can trace the course of a stream that drains the pond off to the northwest, by the trees along its bank. Just beyond the stream a railroad runs northwest along a fill and crosses the stream a mile and a half to the northwest, where I can see the roofs of a group of houses. A wagon road runs north across the valley, crossing the western spur of this hill 600 yards from Lone Hill. It is bordered by trees as far as the creek. Another road parallels the railroad, the two roads crossing near a large orchard a mile straight to my front.
Captain: Can you see the Chester Pike where the railroad crosses it?
Corporal: No, sir.
Captain: Why?
Corporal: Because the hill "62," about 800 yards from Lone Hill, is so high that it cuts off my view in that direction of everything closer to the spur "62" than the point in the Salem-Boling road, where the private lane runs off east to the Gray house.
Captain: Sergeant Jones, in which direction does the stream run that you see just south of the Twin Hills?
Sergeant: It runs south through York, because I can see that the northern end starts near the head of a valley and goes down into the open plain. Also it is indicated by a very narrow line near the Twin Hills which becomes gradually wider or heavier the further south it goes. Furthermore, the fact that three short branch streams are shown joining together and forming one, must naturally mean that the direction of flow is towards the one formed by the three.