No, they were never intended for use in Germany. Germany’s surrender was already inevitable by April 1st and the successful crossing of the Rhine. They completely collapsed just two weeks later. Hiroshima was 5+ months later.
Trinity wasn’t conducted until July, 4 months after the crossing of the Rhine.
It’s all in the book I mentioned. It was intended for Germany because the US thought the Germans had an active nuclear program. Even Japan had one as well. It’s not that the US had an active A-bomb at the time but the development was aimed at Germany first.
The Manhattan Project started years before that, in response to Albert Einstein's letter to FDR about the German atomic efforts.
The B-36 design was started when we were not sure the Germans would not invade/capture England.
We were not going to be flying bombers 5000 miles to drop a few tons of TNT and fly 5000 miles back.