HQ for ground units ...
1. Why NOT check 'Avoid Combat' for a HQ?
2. If I design 50k HQ (lets call it a brigade HQ) and want to fit 2 25k formations there (regiments), it means I have no room for artillery assets at the brigade level, right? I know this is a stupid/obvious question but I want to be sure that in this case, if I want brigade-level assets, I better instead create a 60k HQ.
3. If the HQ is static, the whole formation can't do breakthrough, right? But if an infantry-HQ (they are cheaper to design and I play with 20% research speed, so the cost difference is significant), then I can. And given that's a HQ for a rather large unit, baring a complete rout, it should be safe from harm, right?