I'm curious about the bunkers as well. I think I've heard they don't work, but for some reason I feel like they actually do, but just at the pre-upgrading level (I could be entirely wrong though)
I've been in war while bunkers were upgrading. Before upgrading, the bunkers were filled up with oil. On war day, the lights in the bunkers were off. I'd take that to assume HT's won't deploy in war while the bunkers are upgrading.,