invade,
occupy march aggressively into another's territory by military force for the purposes of conquest and occupation; "Hitler invaded Poland on September 1, 1939"
infest -
live on or in a host, as of parasites
inhabit be present in; "sweet memories inhabit this house"
infest -
occupy in large numbers or live on a host; "the Kudzu plant infests much of the South and is spreading to the North"
