91st Observation Squadron American Expeditionary Force 1918-1919
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United States. Army. Division, 91st
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During World War I, the 91st Observation Squadron of the American Expeditionary Force operated reconnaissance missions 15 to 25 miles beyond enemy lines. They informed A.E.F. Headquarters of movements on roads and airdromes and in railroad yards, which they observed from above 15,000 feet; they also reported on supply and ammunition dumps. The 91st Squadron arrived in Liverpool, England with the 90th and 88th Squadrons in November 1917 and traveled to Hill 402 to constru...
United States. Army. Air Service
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