'Man of War' in the Bible

Then responded one of the young men and said - Lo! I have seen - a son of Jesse, the Bethlehemite, skilled in playing, and a mighty man of valour, and a man of war, and of intelligent speech, and a handsome man, and, Yahweh, is with him.

And Saul said unto David - Thou art not able to go against this Philistine, to fight with him, - for, a youth, art, thou, but, he, a man of war, from his youth.