'War' in the Bible

"Moreover you know also what Joab the son of Zeruiah did to me, even what he did to the two captains of the armies of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he killed, and shed the blood of war in peace, and put the blood of war on his sash that was about his waist, and in his shoes that were on his feet.

But of the children of Israel did Solomon make no bondservants; but they were the men of war, and his servants, and his princes, and his captains, and rulers of his chariots and of his horsemen.

There was war between Rehoboam and Jeroboam continually.

Now there was war between Rehoboam and Jeroboam all the days of his life.

The rest of the acts of Abijam, and all that he did, aren't they written in the book of the chronicles of the kings of Judah? There was war between Abijam and Jeroboam.

There was war between Asa and Baasha king of Israel all their days.

There was war between Asa and Baasha king of Israel all their days.

He said, "If they have come out for peace, take them alive; or if they have come out for war, take them alive."

They continued three years without war between Syria and Israel.