a matter of accident. A body of troops in broad formation will in this case receive a greater number of hits than a column, since each meter of front of the crest line receives a certain number of projectiles. It is otherwise, however, where the slope rises in respect to the line of sight. A line is more easily missed than a column of considerable depth on the march.
The following data in regard to the increase (diminution) of the
depth of the beaten zones is taken from the work of Lieutenant-General
Rohne on Das gefechtsmäszige Abteilungsschieszen der Infanterie, p. 44:
=======+===============+================
Range.| Rising Slope. | Falling Slope.
m. | 1° | 2° | 1° | 2°
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800 | 1/2 | 1/3 | |
1000 | 2/3 | 3/4 | 2 |
1200 | 3/4 | 3/5 | 3/2 | 3
1400 | 4/5 | 4/6
| 4/3
| 2
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The above figure, taken from Lieutenant-General Rohne's work,
Schieszlehre für die Infanterie, p. 128, shows the influence of the ground
on the efficacy of fire when "poor" shots are firing at a target, 100, 200 m.
etc., in rear of which are other targets of the same dimensions but situated
either on level ground, on a 2-degree rising slope, or a 1-degree falling
slope. On a rising slope of 2 degrees the depth of the beaten zone is
decreased by half, and on a downward slope of 1 degree increased by half.
"The knowledge of this influence of the ground is of great impor-
