This microfilm collection contains copied official documents relating to US naval operations in Europe and US naval liaison duties in Britain, 1941-1946. Many of the microfilmed documents are official reports sent to the Historical Section, US Navy, in 1946, for the purposes of compiling an official history. The collection includes material relating to the US naval administration, 1940-1946; the US Navy Special Observer missions in London, 1940-1946; the decision to post Adm Harold Raynsford Stark as Commander, [US] Naval Forces in Europe (COMNAVEU); COMNAVEU organisation and personnel, 1940- 1946; operational reports concerning [US] Naval Forces in Europe (COMNAVEU) and associated commands of COMNAVEU, including US 12 Fleet, 1941-1946; US naval intelligence and naval attaché duties; units under the command of COMNAVEU, including task forces and amphibious forces; supply and logistical activities, 1940- 1946; the history of Lend-Lease and Reciprocal Aid in Britain; the history of US naval bases in Britain; logistical planning for US Naval Forces in Europe for cross- channel operations; COMNAVEU's role in the planning and execution of Operation OVERLORD, the Allied invasion of France, 6 Jun 1944, and Operation NEPTUNE, the air and land assault on France, Jun 1944, including the naval bombardment of Axis forces and the use of US Navy amphibious forces to assault the beaches at Normandy, France assaults; a history of US Naval Task Forces in France, Germany, the Azores, the Mediterranean, and Italy, 1945-1946; relations with US Navy Pacific Command, 1941-1946.