That armored column, all those trucks and personnel carriers. Choppers, jets.
Is there a pipeline that just goes through the Gate, because that's a lot of fuel burning. I understand that it's important to capitalize on one of the key advantages of the JSDF: Speed and mobility, so they "don't spare the horses" when they need to be somewhere, but . . . damn.
Doesn't Japan depend on imported fuel? I would think that the competing powers on Earth would use that as leverage for some concessions on access to the Special Region.
EDIT: OK, there's mention later of U.S. supplying ammunition, so there is at least some logistical support from other countries. We have a long-standing relationship with Japan, and so might be best positioned to do this. That Gate is quite a bottleneck, though. I imagine it's not good to invade a continent from a single beach.