'Men of War' in the Bible

And Samuel arose and departed from Gilgal, and the rest of the people went up after Saul to meet him after the men of war, when they had come up from Gilgal to Gibeah of Benjamin. And Saul numbered the people who were present with him, about six hundred men.

David went out wherever Saul sent him, and behaved himself wisely: and Saul set him over the men of war, and it was good in the sight of all the people, and also in the sight of Saul's servants.