'War' in the Bible

Now these are the nations which the Lord left [in order] to test Israel by them (that is, all [the people of Israel] who had not [previously] experienced any of the wars in Canaan;

only in order that the generations of the sons of Israel might be taught war, at least those who had not experienced it previously).

The Spirit of the Lord came upon him, and he judged Israel. He went out to war, and the Lord gave Cushan-rishathaim king of Mesopotamia into his hand, and he prevailed over Cushan-rishathaim.

“They chose new gods;Then war was in the gates.Was there a shield or spear seenAmong forty thousand in Israel?

Now it happened after a while that the Ammonites fought against Israel.

When the Ammonites fought against Israel, the elders of Gilead went to get Jephthah from the land of Tob;

Now are you any better than Balak the son of Zippor, king of Moab? Did he ever strive against Israel, or did he ever go to war against them?

So I have not sinned against you, but you are doing me wrong by making war against me; may the Lord, the [righteous] Judge, judge this day between the Israelites and the Ammonites.’”

Then from the [tribal] family of the Danites, from Zorah and from Eshtaol, six hundred men armed with weapons of war set out.

Now the six hundred men armed with their weapons of war, who were of the sons of Dan, stood at the entrance of the gate.

Now the five men who had gone to scout the land went up and entered the house and took the image [of silver-plated wood], the ephod, the teraphim, and the cast image [of solid silver], while the priest stood by the entrance of the gate with the six hundred men armed with weapons of war.

Then the men of Israel, other than Benjamin, assembled four hundred thousand men who drew the sword; all of these were men of war.