u/Fresh-Resource-7245

As we approach the 250th anniversary of the United States, I remember learning how the Founding Fathers were skeptical about the survival of the U.S. Was there any source that mentioned how long the founders anticipated America would last/survive with its new system of government?

In popular movies like Enemy at the Gates, we see the Russian army charging with thousands of men, sometimes with rifles and others with ammunition. We also see Commissars shooting anyone who runs away from the battle. Did stuff like that really happen, or was this highly exaggerated because of the large death tolls happening on the Eastern Front?