'Expert' in the Bible

The Reubenites, the Gadites, and the half-tribe of Manasseh [had] {valiant} men [who] carried a shield and a sword, and archers, and [who were] expert in war, forty-four thousand seven hundred and sixty [for] going out [as] an army.

And from the Gadites, valiant mighty warriors, {soldiers fit for war}, expert with shield and spear, defected to David at the fortress toward the wilderness. And {they had faces like lions} [and were] swift as gazelles upon the mountains.