Answer:
Prohibition ended with the ratification of the Twenty-first Amendment, which repealed the Eighteenth Amendment on December 5, 1933, though prohibition continued in some states. To date, this is the only time in American history in which a constitutional amendment was passed for the purpose of repealing another.
The reason it was such a huge mistake was because the weapons were much more modern during the Civil War. Napoleon had weapons that fit to his strategies which was why his strategies were so famous for his day in age. The weapons they used in the Civil War were more powerful, and much more accurate.