I made no such insinuation. What I said was that none of the things you listed are means of production. Military, police, fire, and courts are not productive, but we have them because our world is less than ideal and the friction that results from various sub-optimal interactions calls for institutions to deal with it. Wars don't produce useful things (the economic activity they generate in producing materiel always robs from the potential production of actually useful things, and any spoils of war are simply theft writ large or compensation for damages to zero out the balance), but it's often better to fight a war that comes to you than it is to ignore it. Criminal activity is similar to war in that respect. Fire departments don't produce anything but rather limit the damage from destructive events. Civil courts settle disputes that, in an ideal world, would not need third-party arbitration. It's better to have that arbitration than to let disputes boil over into unregulated violence, but that just makes courts the least wasteful of wasteful means of approaching the problem.
I'll admit that schools might be considered a means of production, but that's open to interpretation.