Marshall Archipelago is an extensive group of large ice-covered islands within Sulzberger Ice Shelf. Several of the islands were discovered and plotted by the Byrd Antarctic Expeditions (1928-30 and 1933-35) and by the United States Antarctic Service (USAS) (1939-41), all led by Admiral Byrd. The full extent of the archipelago was mapped by United States Geological Survey

United States Geological Survey

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...

 (USGS) from surveys and U.S. Navy air photos (1959-65). The naming was proposed by Admiral Byrd for General of the Army

General of the Army (United States)

General of the Army is a five-star general officer and is the second highest possible rank in the United States Army. A special rank of General of the Armies, which ranks above General of the Army, does exist but has only been conferred twice in the history of the Army...

 George C. Marshall, who made financial contributions as a private individual and also, on the same basis, provided advisory assistance to the Byrd expedition of 1933-35.