Under their authority was an army of 307,500 trained for war, a powerful force to support the king against his enemies.
KJV
And under their hand [was] an army, three hundred thousand and seven thousand and five hundred, that made war with mighty power, to help the king against the enemy.
ASV
And under their hand was an army, three hundred thousand and seven thousand and five hundred, that made war with mighty power, to help the king against the enemy.