emplacement (n.)

"a putting or fixing in place; a place or site," 1742, formerly also implacement; from French emplacement "place, situation," from verb emplacer, from assimilated form of en- "in" (see en- (1)) + placer "to place" from place "place, spot" (see place (n.)). Military sense of "the space within a fortification allotted for the position and service of a gun or battery" is attested from 1811.