Which major military organization completely redesigned its logo in 1942 to remove a specific symbol that had been part of its identity for decades?

Military organizations have long used distinctive logos, insignias, and branding to establish identity, build morale, and instill fear in enemies. From ancient Roman standards to modern military patches, these symbols carry deep meaning and often tell stories of heritage and valor. This trivia question focuses on an interesting transformation in military logo history that might surprise even history enthusiasts.

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The U.S. Army Air Forces removed the swastika from its aircraft roundel, which had been used as a symbol of good luck since 1918
The British Royal Navy removed the crown from its emblem during WWII to avoid providing targeting information to German bombers
The Soviet Red Army removed the imperial double-headed eagle from all insignia after discovering it was still being used on officer badges
The Japanese Imperial Army removed the chrysanthemum flower from battlefield flags to separate military actions from the Emperor's divine status