WW I: St. Mihiel Offensive September 12-16

The first all-American offensive on the Western Front.

Seventeen U.S. divisions (or elements of divisions) participate.  This was a total of 665,000 men.

This was also the first time that tanks were used by U.S. military, the 1st Tank Brigade.

The offensive also featured the largest aggregation of air support during the war with 600 airplanes and crews.

The Doughboys take the German salient after a 36-hour battle.

15,000 Germans are captured as are 250 artillery pieces.

U.S. casualties, however, were enormous with 1,799 killed in action and 6,885 wounded in action.

--Cooter