Battle Stars for the Army Air Force

[Checkertail20]

I have been doing a little research on campaign ribbons and battle stars from World War 2 and it is hard to find anything on the AAF that pertains to these recognitions. I did find a list of what military actions earned someone a battle star but that was for the Navy. Did the AAF have battle stars and if so was it the same criteria as the other military branches?

 

[graves69]

my grandpa was in the Army Air Corps during WWII and received a battle star.