Complex sentence: According to the U.S. Army, there is no record of Macbeth being a Ranger, or serving in a combat unit: he was discharged from the service after having been declared unfit or unsuitable for the Army, or both, before he could complete basic training.
Split into simpler sentences: According to the U.S. Army, there is no record of Macbeth being a Ranger, or serving in a combat unit. He was discharged from the service after having been declared unfit or unsuitable for the Army, or both, before he could complete basic training.