British and American troops were led by who in the Battle of El Alamein?

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.