Just wondering if ther is a way to revive dead Retinue members. And what happens if all the spaces in the graveyard are full?

If your Retinue members die in battle that's it - they are permanently dead. Remember they are only regular units that carry over from mission to mission and gain experience (thus letting you have some high level units to fight with at the start of the mission). Some are also harder to get if you don't have an alliance with their race.

As for the graveyard I've never really noticed it, but I suspect you can't fill it up (either a new page appears or the newest dead push out the old)

diddnt older version let you reserect them or am i confused with master of magic?