Glossary of Code Names
| ARCADIA | U.S.-British conference held in Washington, December 1941 January 1942. |
| BLUE | Code name for United States in prewar planning. |
| BLUIE WEST BLUIE EAST |
U.S. Air bases in Greenland. |
| CRIMSON | Air routes through central and northeastern Canada, part of the air ferry route to the British Isles. |
| CRYSTAL | Three meteorological stations in northern Canada. |
| FELIX | German plan for capture of Gibraltar. |
| GRAY | Plan for capture and occupation of the Azores. |
| GYMNAST | Early Allied plan for invasion of northwest Africa. |
| INDIGO | Plan for movement of troops to Iceland. |
| LILAC | Late 1941 plan to concentrate U.S. forces in Belém-Natal-Recife area of Brazil- |
| ORANGE | Prewar plan for operations in event of war with Japan. |
| POT OF GOLD | 1940 plan to send large expeditionary force to Brazil. |
| RAINBOW | Various plans prepared between 1939 and 1941 to meet Axis aggression involving more than one enemy. |
| SEELOEWE (SEA LION) |
Planned German invasion of United Kingdom. Canceled. |
| VELLUM | Force sent to Venezuela, February 1942. |
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