The assumption that military activity, which is a subset of any nations economy and mostly stationary in any case but a world war, would not be dwarfed by the majority of civilian activity like industrial activity and trade routes, is simply absurd.

There is nothing about “military engines” or “military supply routes” or “military explosions” that leads anyone to believe their impact would be any worse than their civilian equivalents, and even if they were, you still have to prove that they are so much worse that even their limited activity compared to the normal economy must be given priority attention.

The burden of proof is on the one making the claim, not everyone else.