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United states army air service

1918–1926 air warfare service of the United States Army

Pronunciation
/juˈnaɪdəd steɪts ˈɑrmi ɛr ˈsərvəs/
/juːˈnʌɪtɪd steɪts ˈɑːmi ɛː ˈsəːvɪs/