Here is a Military.com piece about new Army retention control points. You need to know this when negotiating PTA’s or alternative resolutions, and after sentence is announced.
Official Army guidance was released on Jan. 28, directing new changes to the RCP program. These changes only affect Soldiers in the ranks of private to staff sergeant. Privates through privates first class can retain enlistment for up to eight years. Specialists and corporals are allowed 12 years, while promotable specialists and corporals can stay in for up to 15 years. Sergeants are allowed 15 years, promotable sergeants, 20 years, and staff sergeants are authorized 23 years.