MacVane continued to work as a war correspondent throughout World War II. He was the only American correspondent to accompany Allied forces during the Dieppe Raid. He also accompanied the invasion fleet during the North African campaign in 1942. In 1944 he covered the Normandy landings, and was the first correspondent to land at Omaha Beach. He returned to London to broadcast the first full eyewitness report of the invasion. He was one of the first correspondents to enter Paris after its liberation. MacVane continued to report from the Western Front until the fall of Berlin, and witnessed the meeting of American and Soviet forces at the Elbe near the end of the war.