Title: The Secret Invaders
Author: Bill Strutton
Strutton, Bill (1958) and Michael Pearson. The Secret Invaders. London, Hodder and Stoughton
- Willmott, Nigel.
- Great Britain. Combined Operations Command.
- World War, 1939-1945–Amphibious operations.
- Military reconnaissance.
Date Updated: February 23, 2017
An account of the British Combined Operations Pilotage Parties which, during World War II, collected defense, geographic, coast, and landing beach intelligence for the planning of amphibious operations, including the Normandy landings, by sending swimmers to make observations and measurements.