Where you been, This was high angle fire in the FIRST World War. Ian Hogg goes into great detail about setting the machine guns to cover certian areas. This is why 30-06 long range ammo was developed, to give better range to MACHINE guns. As a matter of fact this was one of Hiram Maxim's selling points in 1900 to the British and they tested this agains a wagon caravan at 2500 yards with, PLUNGING FIRE.