Help my ships won't attack

[PvK]

There also won't be a combat if your own ships are cloaked, and they can't see yours.

PvK

[ShadeD1]

DOH!...my ally had captured them the turn before and they both have the same race icon...I had to open his turn to figure it out...thanks for all the suggestions guys

[Grandpa Kim]

Actually all you had to do was right click on the empire icon in the top left corner of the ship screen. This opens the empires details telling you, among other things, the name of the empire.