'Expert in War' in the Bible
Moreover, Hushai said, “You know your father and his men, that they are mighty men and they are fierce, like a bear robbed of her cubs in the field. And your father is an expert in warfare, and will not spend the night with the people.
He makes my hands expert in war, so that a bow of brass is bent by my arms.
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.
Of Zebulun, such as went forth to battle, expert in war, with all instruments of war, fifty thousand, which could keep rank: they were not of double heart.
And of the Danites expert in war twenty and eight thousand and six hundred.
And of Asher, such as went forth to battle, expert in war, forty thousand.
He makes my hands expert in war, so that a bow of brass is bent by my arms.