アメリカ極東陸軍
Danao City was well known for its gun industry. The industry started around 1905–06. When World War II came, the Danao gunsmiths went underground, joined the guerrilla movement or were inducted into the United States Army Forces in the Far East. Their main task was to re-chamber the Japanese Arisaka rifles to fit the US .30 caliber round or to keep the original Japanese rifle in good service.