[scorpio_rocks]

OOOPS sorry.

First of all pressing C to take cover only works for infantry but:
1. No
2. No (except it will have "used" some shots)
3. No
4. No (not normally)
5. No

I think most folks use it only in emergencies where they are caught in the open by previously unseen enemies so you are unlikely to be returning fire etc as you want to remain hidden/in cover.