25th Aero Squadron 1918. Pictured are mostly the enlisted corps. The squadron commander, <a href="https://en.wikipedia.org/wiki/Reed_G._Landis" class="extiw" title="en:Reed G. Landis">Reed G. Landis</a>, is centered holding the officer corps mascot. The sheep is the enlisted corps mascot.
U.S. Air Force Museum
1918
U.S. Air Force