'War' in the Bible

“Then you said to me, ‘We have sinned against the Lord; we will indeed go up and fight, just as the Lord our God commanded us.’ And every man of you girded on his weapons of war, and regarded it as easy to go up into the hill country.

Then the Lord said to me, ‘Do not harass Moab, nor provoke them to war, for I will not give you any of their land as a possession, because I have given Ar to the sons of Lot as a possession.’

Now the time that it took for us to come from Kadesh-barnea until we crossed over the brook Zered was thirty-eight years, until all the generation of the men of war perished from within the camp, as the Lord had sworn to them.

“So it came about when all the men of war had finally perished from among the people,

Or has a god tried to go to take for himself a nation from within another nation by trials, by signs and wonders and by war and by a mighty hand and by an outstretched arm and by great terrors, as the Lord your God did for you in Egypt before your eyes?

However, if it does not make peace with you, but makes war against you, then you shall besiege it.

“When you besiege a city a long time, to make war against it in order to capture it, you shall not destroy its trees by swinging an axe against them; for you may eat from them, and you shall not cut them down. For is the tree of the field a man, that it should be besieged by you?

Only the trees which you know are not fruit trees you shall destroy and cut down, that you may construct siegeworks against the city that is making war with you until it falls.