Theoretically speaking, if a person joins the US military with the intention of threatening to commit sewer slide to 'sad out', how long do they need to stay in to get VA benefits?
You'd actually be better off making multiple reports of sexual assault while still in the service, because it can't really be disproven. It's just a matter of whether or not you care about cheating the system like that.
VA bennies depend on your specific medical issues and level of disability. If you go sad panda, the VA goes "lol" and won't given you shit. They are even more Hitler about making sure you aren't getting undeserved benefits than Social Security