Front:
DIRECTING THE RANGE FOR THE MORTARS
AT FORT WRIGHT, FISHERS ISLAND, N.Y
PHOTO UNDERWOOD & UNDERWOOD N.Y.
Back:
PUBLISHED BY AMERICAN COLORTYPE CO, CHICAGO
No, these men are not trying to figure out
the solution to a problem in mathematics, but
are engaged in solving a very real problem of
modern warfare. To be an officer of artillery
requires a comprehensive knowledge of higher
mathematics, and range finding for mortars is
even harder than for the other types of guns
with longer barrels. Because of the peculiar
construction of mortars, in order to get any
considerable range, it is necessary that they be
fired at a great angle of elevation. Note the
telephones which enable the officers to give in-
structions to their men, who are doing the ac-
tual work of aiming and loading the mortars.
No. 18.
