Indirect or Curved Fire is from guns with less than service charges, and from howitzers and mortars, at all angles of elevation not exceeding 15°.
High-angle Fire is from guns, howitzers, and mortars, at all angles exceeding 15°.
Front or Frontal Fire is that which is directed perpendicularly, or nearly so, to the general line of troops fired at.
Fig. 104.
Oblique Fire is that which is directed obliquely to the line fired at; it is more searching than front fire.
Enfilade Fire is that which rakes the enemy's line of troops, the gun being on the prolongation of the line. It is the most effective fire.
Flanking Fire is one directed along the front of, or nearly parallel to, the line to be flanked or defended.
Reverse Fire is when the object is fired at from the rear.