'Warfare' in the Bible

And the thing was good in the sight of the children of Israel, and the children of Israel blessed God, and no more said that they would go up in warfare against them, to destroy the land in which the children of Reuben and the children of Gad dwelt.

And it came to pass in those days that the Philistines gathered together their armies for warfare to fight against Israel. And Achish said to David, Know thou assuredly that thou shalt go out with me to the camp, thou and thy men.