Your question cannot be answered because you didn't tell which war you are asking about.
general mcarthur
The Commanding General of the Union Army was Ulysses S. Grant
General Winfield Scott.
Korean conflict .
Stephen Kearny.
Britain didn't have any troops in the Pacific during World War 2
The last Commanding General of the Union Army was Ulysses S. Grant
General Westmoreland was the commander of all U.S. forces during Vietnam.
He was a general during the revolutionary war, who was ordered to send Lt.Col. Francais Smith and his troops to go to concord.
General Nelson A. Miles. General William R. Shafter.
George Washington
General Braddock