OK has to be strange, I know a guy who was getting 30% disability, and the judge awarded his wife the same percentage of that, the he awarded her of his retirement. One guy in LA, he was retired, we were working in WA for a little while, he had divorced up there 10 years earlier, while on active duty. He went to visit his daughter, his ex found out, guy got served at the hotel, and was told by a lawyer in WA that he was SOL. He ended up giving her some back pay and a percentage every month.
The whole vesting thing is not even an argument, although if the divorce happens when the member is on active duty, they can seperate before they are eligible, but who knows. It is very random, not well written the way it is.