How should policymakers, technologists, armed forces, lawyers, and others conceptualize accountability for technical autonomy in relation to war? In a recently-published briefing report from the Harvard Law School Program on International Law and Armed Conflict, we devise a new concept: war algorithms. We define a war algorithm as any algorithm ... If a service member doesn't show up and body notices, then the commander reports 100% accountability. If the soldier were to be found injured or worse, that commander would be in a world of hurt, as would each and every service member appointed over that soldier. A good soldier should be two steps ahead of the game at all times.