Retnrn-action

Drop Bomb. — A bomb which, when striking the earth, throws a mi ile which is known as a "shell" into the air. The shell is attached to a steel wire, which explodes it and scatters the fragments. It acts like a high explosive shell from a field artillery gun. Return Gallery — In fortification, a gallery which leads from another. It is called either an oblique or rectangular return, according to whether the projections of the axes of the two galleries make a right or an acute angle with each other. —A slang term of the trenches, meaning the wounded, etc./ sent back to the hospitals or convalescent camps for care and treatment. of a Trench. — The various turnings and windings which form the lines of the trench, and are, as near as they can be, made parallel to the place attacked, to avoid being enfiladed. of Effectives. — In campaign, a monthly return showing the effective strength of all organizations. In determining each strength only those who are available for service in the line of battle are included.