Generally speaking, much of history is about war, territory, and the exploits of kings. Traditionally, kings have a motive for celebrating themselves. They have the funds to write, publish and circulate stories of their successes and, occasionally, their distresses.
The books of Bamidbar and Devarim do style themselves as historical texts, narrating events and offering snapshots of legal traditions. Some academic scholars credit the early Israelite kings for commissioning and overseeing the books. Perhaps that accounts for the books’ preoccupation with war and its philosophical frames.
Current events are heavily focused on war, too. Governments, resistance groups, and advocacy organizations publicize sympathetic accounts of their successes and distresses, too. When we read about unfolding events, however, we recognize and try to respond to urgent needs for relief. Thus it seems appropriate, ethical, and results-oriented to focus on war – not odd at all.
As Torah attempts to tell a religious history, its focus on war seems to present war as a religious experience. Sociologist Max Weber theorized about the roots of this view. The spiritual covenant we prize, Weber argued, was not originally an agreement between the Israelites and God. Instead, it was a confederation agreement between the twelve Israelite tribes to support each other in times of war. But the army’s leader, figurehead, and supreme general could not be recruited from any particular tribe. The leader was God, Commander of Commanders. Thus, worship of a warrior God was important social glue in ancient Israel.