I am going to assume that the court ordered divorce decree establishes this in writing.  Because the UCMJ only gives this as an option  it is NOT automatic, NOR is it guarentedd to be 50% of retirement pay.  It is a percentage, but each states's divorce laws are different.  \n\nIf you are not already divorced, get thee hence to a civilian lawyer well versed in military law.  If you are already divorced, then unless you can get the decree changed, I am not sure there is much you can do.