Complex sentence: He joined the US Army in 1985 as a paratrooper with the 82nd Airborne where he served for four years with B co 2/505 Parachute Infantry.
Split into simpler sentences: He joined the US Army in 1985 as a Paratrooper with the 82nd Airborne. He served for four years with B co 2/505 Parachute Infantry.