Keywords: Alligator V.jpg Marine Sergeant Clarence H Raper right and Corporal Walter L Gibson pose beside the first amphibian tractor procured by the Marine Corps It was tested extensively in 1940 under the direction of then Captain Victor H Krulak the later author of First to Fight An Inside View of the U S Marine Corps and the father of Charles C Krulak the 31st Commandant of the Marine Corps http //files asme org/ASMEORG/Communities/History/Landmarks/5490 pdf 1997-05-21 United States Marine Corps Air-Ground Museum May; Quantico Virginia PD-USGov-Military-Marines PD-USGov Landing Vehicle Tracked Victor Krulak |