攻こう撃げき開かい始し線せんこうげきかいしせんMeanings1nounline of departuremilitaryMilitary term for the starting line or point from which an attack is launched.部ぶ隊たいは攻こう撃げき開かい始し線せんを越こえて前ぜん進しんした。The unit advanced beyond the line of departure.
