Japan 45

[CheerfullyInsane]

The trick to taking a bunker becomes one of using a lot of armor. We were testing out the Japan '46 game and that was how I was able to take them. Use a lot of tanks. Esp. the ones with flamethrowers. They have a 37 assault value.

37 Assault value is indeed good. But since the Alt Assault OR uses the Hard attack value against hard targets, it doesn't really help all that much. Instead those flame-thrower tanks will be using a Hard Attack of 4.

Which is kinda my point. Pioneers and flame-throwing tanks will have no discernible effect on bunkers, despite it being one of those things they were specifically equipped for.
You're better off using e.g. LVTs since they have a Hard attack of 7.