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Their rank insignia was now a freework pin of crossed quill pens on either side of the freework "U.S." pins worn on the standing collar of the M1909 tunic. They were not permitted the brown mohair cuff braid band of an Army officer but were authorized a silver-and-black braid hatcord for wear with the M1911 Campaign Hat and the officer's "G.I. Eagle" on the M1902 peaked cap.
On 9 July 1918, Congress established the rank and grade of warrant officer
Army Air Forces flight officer rank insignia of World War II.
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