Okay the question has come up with the underseige mission. If the pplayer characters are wounded the imperials can claim the token on the tile at the end of the round. Since you can't wound an ally in the sense that its card flips over like a player character the ally simply leaves. Does he county as "Health" in the aspect of say wounding all heros the mission ends guidelines?

As long as an ally is not defeated, it is considered healthy. Note that this only take effects when the rule specifically states "healthy rebel figures" and not "healthy rebel heroes". Allies are not heroes.

This is a gray area.

We can assume an ally in play is a healthy rebel figure, and as Darkjodo pointed out the differences between "healthy rebel figure" vs "healthy rebel hero" is a great argument for that point. But the terms "Healthy" and "Wounded" only apply to heroes.

Theme-wise, it would make sense that an ally should stop an Imperial figure from claiming a token in Under Siege. And as the Imperial Player, I've allowed allies by themselves to block capture of these tokens. But, they really should put this in the next FAQ update. Either, allies in play are considered "healthy", or change mission rules to "healthy rebel heroes and rebel allies".

As long as an ally is not defeated, it is considered healthy. Note that this only take effects when the rule specifically states "healthy rebel figures" and not "healthy rebel heroes". Allies are not heroes.

What? Luke is not a hero?

Lol!