To answer this question we need a time period.
General Omar Bradley was in charge of American troops on D-Day.
General Winfield Scott.
Generals Scott, Taylor and Kearny.
General Nelson A. Miles. General William R. Shafter.
George Washington.
Dwight Eisenhower No. There were no American troops at El Alamein and the British and Commonwealth troops were commanded by General Auchinleck and General Dorman Smith during the 1st defensive battle but were replaced by General Alexander in overall command and General Montgomary. commanding the 8th Army in the field, for the 2nd decisive counter attack.
In 1780 in the South, Nathaniel Green assumed command of American troops. His nickname was 'The Savior of the South.'
Ulysses S. Grant is the American general that is often ranked second to General Washington as a military leader. Ulysses S. Grant is responsible for leading the Union troops to victory during the American Civil War over the Confederate troops.
Nathaniel Greene
Horatio Gates
American Expeditionary Force (AEF)
He was the general of the Southern based British troops.