Warfare History Network
No single country could compete.
Key point: The aftermath of World War II left the United States as the single country with the most military capability, which persists to this day.
During World War II about 16,000,000 personnel served in the U.S. Military: approximately 11,200,000 in the Army, 4,200,000 in the Navy, and 660,000 in the Marine Corps.
On 1 July 1939, the strength of the active Army was approximately 174,000, three quarters of whom were scattered...
Read this story at The National Interest