a situation on an enemy shoreline grabbed by troops prior to an invading force.
A first achievement that opens the way for further developments; a foothold: "It is not yet clear whether the ecologists will establish a beachhead in the economists' carefully constructed intellectual empire” ( Peter Passell).
a place of hostile territory (especially on a beach) that, whenever captured, serves for constant landing (or action into place) of additional soldiers and product
a preliminary success that guarantees the likelihood of further improvements in a project; a foothold
a location in aggressive area that is occupied and it is held to permit aditional soldiers and materials to enter.
a bridgehead on opponent's shoreline seized by an amphibious procedure
an initial accomplishment that opens how for further improvements