Under the old system your retirement pay was 2.5% per year served. So 37.5% instead of the 50% you would get at 20 years. Last I know of early retirement happening was after the Gulf War in the mid 90s when everything was downsizing. Wouldn't be surprised if it was happening now too though.
I looked it up, it was 2012 to 2018 (unless it was cancelled before the date in the ALARACT). Not sure if it was all the military or just the Army, though. Being in the Army, I didn't concern myself with the lesser branches ;)
