This exceptional series by Robert Pandis includes:
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- Flight Badges of the Allied Nations, 1914-1918: Volume I – The French, Russian, and Romanian Air Services
- Flight Badges of the Allied Nations 1914-1918: Volume II – The British Empire, American, Belgian, Japanese, Italian, and Serbian Air Services
- Flight Badges of the Central Powers, 1914-1918: Volume I – Imperial Germany Aviation & Commemorative Airship Badges
- Flight Badges of the Central Powers, 1914-1918, Volume II – The Imperial German Naval, Austro-Hungarian, Bulgarian, and Ottoman Turkish Air Services
