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This table calculates the effect of elevation on movement.
Arm | Gait | Distance | Reduction for Slopes. In yards horizontally per ten feet vertically* | Maxim Slope Practicale | ||
Yards per Minute | Miles Per hour | Deg. | Vert /Hor. | |||
Infantry | March | 88 | 3 | Up: 10 Down: 10 for slope above 10 degree |
45 | 1/1 |
Double | 147 | 5 | Down: 10 Up: 20 for slope above 10 degree |
10 20 |
1/6 1/3 |
|
Advancing by rushes | 16 | |||||
Advancing and firing | 40 | |||||
Cavalry | Walk | 117 | 4 | Up: 40 or slope above 5 degree Down: 60 for slope above 5 degree |
25 20 |
1/2 1/3 |
Trot | 234 | 8 | Up: Same as walk Down: Same as walk |
15 10 |
1/4 1/6 |
|
Gallop | 352 | 12 | Up: Same as walk Down: Same as walk for slope above 3 degree |
10 5 |
1/6 1/12 |
|
Charge | 440 | 15 | Up: Same as walk Down: Same as walk for slope above 2 degree |
5 5 |
1/12 1/12 |
|
Artillery | Walk | 117 | 4 | Up: 10 Down: 60 for slope above 5 degree |
10 10 |
1/6 1/6 |
Trot | 234 | 8 | Up: 20 Down : 60 for slope above 3 degree |
5 5 |
1/12 1/12 |
|
Gallop | 352 | 12 | Up: 30 Down: 60 for slope above 2 degree |
5 5 |
1/12 1/12 |
|
*Example. Artillery travels 60 min.on hilly road, going up hill a total of 100 ft. (vertically) and down hill a total of 50 ft. Required actual distance traveled: 117 X 60=7020 yds., distance if road had been level. 10/100 X 10 + 10/50 X 60=400 yds. 7020 -- 400=6620 yds. actually traveled. |
From: Military Topography for the Mobile Forces. by Captain C.O.Sherrill. Menasha, Wisconsin: George Banta Publishing Co. (1912); page 30
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