File:IDENTIFICATION The World's Military, Naval And Air Uniforms, Insignia And Flags 1943 U. S. INSIGNIA OF THE CITIZEN DEFENSE CORPS basic Drivers Messengers Rescue Police Firemen Medical etc WW2 Google-digitized Public domain No known cop.jpg

English: Book illustration from Identification of The World's Military, Naval and Air Uniforms, Insignia and Flags

Cropped version of scanned page showing a book plate with colour drawings of American insignia, from a handbook on foreign military uniforms and insignia designed for intelligence officers etc., published by The Military Service Publishing Company (The Telegraph Press), Harrisburg, Pennsylvania, USA, during World War II; first edition 1943, second printing, April 1943; scanned original from University of Michigan, digitized by Google. Low resolution image with distorted colours, details, etc.

• Insignia of the Citizens Defense Corps
  • Official Civil Defense insignia, along with United States Citizens Defense Corps insignia. Each insignia consists of a white triangle within a blue circle, with a unique red symbol within the triangle.Designs patented by U.S. Office of Civilian Defense
  • See Civil Defense Organization, Insignia, and Ranks
  • United States civil defense refers to the use of civil defense in the history of the United States, which is the organized non-military effort to prepare Americans for military attack and similarly disastrous events. World War II, which the United States entered after the Attack on Pearl Harbor, was characterized by a significantly greater use of civil defense. Late in the 20th century, the term and practice of civil defense fell into disuse. Emergency management and homeland security replaced them.

Unknown author/designer/illustrator; public information; no known copyright restrictions; Public Domain