@Narvik:
I figure the Allies would lose 200 000 men, and Japan lose 8 million.
If we compare to the Korean war, the western allies USA, UK, Canada and ANZAC lost 180 000 men of a total force of 1.200 000 soldiers. The Commie allies North Korea, Sovjet Union and China lost 600 000 men of a total force of 1.200 000 soldiers, plus 3 million civilians. The Commies had short supply lines and were defending their homes, but the western weapons, training and tactic were superior.
Japan was depending on ships for 90 % of their consume, and in 1945 they were strangled by the blockade, and USAF had bombed all industry. There were no way Japan could supply any fighting force with guns and ammo in 1945. Even if they had high morale and would fight to the dead, they would be using sticks and knives, against tanks, artillery and aircrafts. It would look like the Roarkes Drift were 5000 Zulu warriors was defeated by 137 Brits with rifles.
40% of all ammo in the Japanese inventory was cached on Kyushu…
Over a million Japanese soldiers were on that island alone…
Over 10,000 Kamikaze’s were available for the defense of Kyushu alone…not to mention the hundreds of suicide submersibles they had available…
They had mobilized the population to fight and even if 10% of them did that’s still a force multiplier on the magnitude of millions more combatants…
You sound dangerously like the intel analysts who said Pelelieu would take 3 days to pacify, Iwo Jima would take 10 days, and Okinawa 2 weeks…