Not going to lie: reserve seems simple enough, but I'm still a bit perplexed.
So the basic rule of reserve is one ship for every three ships of the same type already in your fleet. So you can grab a battleship if you already have three, an escort if you already have three and so on and so forth...or is it?
Scenario one: I have three lunar class cruisers in my list. Can I take a dominion battlecruiser as a reserve vessel?
Scenario two: I have three dominator cruisers in my list. Can I take a avenger grand cruiser as a reserve vessel?
Okay it gets trickier:
Scenario three: I have two lunar class cruisers in my armageddon list. I then take a Mars Battlecruiser, and then take a dominion battlecruiser as reserve and then grab a retribution battleship. Legitimate or not?
Scenario Four: I have a dauntless light cruiser and two lunar cruiser on my list. I take two mars class battlecruisers, a overlord as reserve and then two emperor class battleships. Legitimate or not?
If you can answer all four, you clearly have no reservations about helping the community. (slinks away in shame after pun).