Under their command was an army of 307,500 men trained for war, a powerful force to support the king against his enemies.
NIV
Under their command was an army of 307,500 who could fight with mighty power to help the king against the enemy.
AMP
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.
KJV