I've been playing for a little over a month, and got pummeled in my first game. I'm a few games in and I've gotten the hang of land battles, but have some questions about naval battles:
1) Do Battleships and Cruisers have any melee attack value (against subs or infantry)?
2) If I stack infantry with a sub, do all the units get invisibility? Or should I let subs stacks go solo without infantry?
3) Are Battleships worth the cost in time/resources, or will a bunch of Cruisers be better to build?
4) Is using infantry scattered tightly through a waterway a good way to 'mine' for submarines?
Thanks in advance.