In 1931, Brigadier General Randolph C. Berkeley appointed del Valle to the "Landing Operations Text Board" in Quantico, the first organizational step taken by the Marines to develop a working doctrine for amphibious assault. In 1932, he wrote an essay titled "Ship-to-Shore in Amphibious Operations" which was published in the Marine Corps Gazette. In his essay, he stressed the importance of a coordinated amphibious assault and of an execution of an opposed landing.
In 1931, Brigadier General Randolph C. Berkeley appoin?ted del Valle to the "Landing Operations Text Board" in Quantico, the first organizational step taken by the Marines to develop a working doctrine! f,or amphibiou,s assault. In 1932, he wrote an essay titled "Ship-to-Shore in Amphibious Operations" which was p,ublished in the Marine Corps Gazette. In his essay, he stressed the importance of a coordinated amphibious assault and of an execution of an opposed landing.