Enfilade and defilade are concepts in military tactics used to describe a military formation's exposure to enemy fire. A formation or position is "in enfilade" if weapons fire can be directed along its longest axis. A unit or position is "in defilade" if it uses natural or artificial obstacles to shield or conceal itself from enfilade. The strategies invented by the English use the French enfiler ("to put on a string or sling") and défiler ("to slip away or off") which the English nobility used at that time. Enfilade fire, a gunfire directed against an enfiladed formation or position, is also commonly known as "flanking fire".
enfilade n. A line or straight passage, or the position of that which lies in a straight line.
enfilade n. A firing in the direction of the length of a trench, or a line of parapet or troops, etc.; a raking fire.
enfilade v. t. To pierce, scour, or rake with shot in the direction of the length of, as a work, or a line of troops.
enfilade (f) n. enfilade, gunfire coming from the side
enfilade n. gunfire coming from the side n. enfilade, gunfire coming from the side