3 gold coins is apparently equivalent to 300 million yen and he spent 1 gold for a spear? That 3 gold coins he got is almost 2.9 million US dollars...
He got promoted to sergeant and got in command of smallest combat PLATOON EVER which also has another sergeant, a corporal, and a CAPTAIN!? Then he got called a captain in the end!?
WTF is happening with this translation???