Which general was the chief of staff of the us army during world war ll

George C. Marshall

Explanation:

He was a World War I staff officer and later became assistant commandant at the U.S. Infantry School. Named chief of staff when World War II began in 1939, Marshall was responsible for exponentially increasing the size of the U.S. Army, and he helped devise Operation Overlord in 1944. After the war, he came out of retirement to serve as President Harry Truman’s secretary of state. His economic recovery program for Europe became known as the Marshall Plan, and he was awarded the Nobel Peace Prize in 1953.