UPDATE: Michael McGill from the Airforce 462 Weapons Load Crew page on Facebook reports it is not a bomb nor a rocket. It’s a missile (as Bob correctly noted as well), a French Antac MGM-32 Anti-Tank Missile. The US Army used this before the TOW Missile became available.
As I told Charles, I don’t want those rockets/bombs/missiles fired from a jeep while I’m sitting next to the launcher! This is an old photo of from the Belgium Army.
Dummy Entac rocket/bomb/missile
Belgium transmissions group.