The context of the above was that the effectiveness of Kenjutsu in close combat was reconfirmed due to situations where armor lost its significance due to the improved killing power of guns and soldiers coming to fights lightly equipped.
これは銃器の貫通・殺傷力向上や、後込め式小銃による火力の向上の結果として甲冑の意義が薄れ、歩兵は軽装となったがゆえに、かえって近接白兵戦の有効性が再認識されたためである。