You do not get off so lightly. The United States did not have 16 million and a half service people so your number is taken from the total allied forces. I’m not even sure of that number as too many of our allies padded numbers to obtain resources. Sweet dreams.
Yes, they did, if you count Merchant Marine, but that's only 240,000 or so, so make that 16.25 million in uniform. See my post #17.
Today we have about 3 million in the military, but half of them are in the reserve forces, that is the Army, Navy, Marine and Air Force Reserves, along with the Army and Air National Guard. Of course that is out of a much larger population, 300M+ today, verses about 137M in the middle of WWII.