[2] Van Antwerp graduated from the United States Military Academy with a Bachelor of Science degree in 1972, where he was First Captain of Cadets.

He completed Ranger, Airborne and Air Assault training and the Engineer Officer Basic and Advanced Courses.

Additionally, Van Antwerp exercised Department of the Army directed executive agent authority over the United States Military Entrance Processing Command.

Other assignments include Chief of Staff, U.S. Army Corps of Engineers; Assistant Chief of Staff for Installation Management, Washington, DC; Director, Office of Competitive Sourcing, Office of the Assistant Secretary of the Army (Research, Development and Acquisition), Washington, DC; Executive Assistant to the Vice Chairman of the Joint Chiefs of Staff, Washington, DC; Executive Office, Office of the Chief of Engineers, Washington, D.C.; Chief, Military Engineering and Construction Division, U.S. Army Western Command, Fort Shafter, Hawaii; Executive Officer, 84th Engineer Battalion, 45th General Support Group, Schofield Barracks, Hawaii; and Instructor, Department of Mechanics, U.S. Military Academy, West Point, New York.

After retiring from military service, he joined the Board of Directors for the Michael Baker Corporation.