"The bicorne or bicorn (two-cornered/horned or twihorn) is a historical form of hat widely adopted in the 1790s as an item of uniform by Europe and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, which survived as widely-worn full-dress headdress until the 1910s." - (en.wikipedia.org 29.06.2021)
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