The U.S Army used to use the Swastika, look up the WWI 45th Infantry Division.
The U.S Army used to use the Swastika
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According to the award winning, hit musical “Springtime For Hitler” the Swastika was designed specifically for Hitler because the 4 sevens represented his favorite #.
The Finnish Air Force had a blue swastika painted on their planes during the Finnish-Soviet war of 1939-1940 and probably also when Finland was a co-belligerent with Germany against Russia in order to win back Finnish land lost in the previous war.