A promotion for the general who became famous for being the last U.S. soldier to leave Afghanistan is being delayed by a Republican senator, a Senate aide confirmed to Military.com on Friday. Lt. Gen. Christopher Donahue, who has been nominated to receive a fourth star and take command of U.S. Army forces in Europe, was noticeably absent from a batch of military promotions the Senate approved Thursday evening before leaving for its weeklong Thanksgiving break. The aide confirmed Donahue's