The US would never have time to develop the capacity for the bomb.

The Nazis began their invasion in 1939. They wouldn't wait if they got their super soldiers in 1930. I'm not sure when, but they probably would invade by 1935. But even assuming they did wait till 1939 the world would get stomped and the US wouldn't have time to make the bomb.



First stage is the same, the Nazi's overrun continental Europe in days.

The second is vastly different. They would simply swim the channel, and England would fall in a few more days.

Then would come Russia. Historically the winters were a huge problem for the Germans, and cost them the war. Cap can survive being frozen into a literal ice block. The Germans will be able to advance even during literal blizzards without much trouble. Yes, they won't have their tanks, and will have huge logistic problems, but they won't really need the tanks and their super human durability would allow them to survive without everything a regular soldier needs. They would take moscow before 1941, and the rest of the country shortly after.



So the year is 1941, and with the exception of the USA, every single country in the world that opposed them has fallen. They would use the next year to prepare for an invasion of the USA, and they invade spring 1942.

Its questionable if the USA could have repelled the forces of the entire German army, especially if they crushed Russia in under a year. I assume if they were actually going to invade we would have had made a larger and better equipped army, but its hard to know if it would have been enough.

It would be the resources of all of Europe, Asia and Africa against America. We have some huge advantages most notably the difficulty in projecting force across an ocean, it would be a difficult conflict and I could see it going either way.

But against this Cap army? We would lose. We would lose bad. We would be crushed in every major battle to veteran super soldiers with air and naval superiority. It would simply be a stomp.



I wouldn't be particularly surprised if the USA surrendered within a few days of the initial invasion and only losing a few states simply due to the fact that we literally could not win.