What's this movie called?

Some unintelligent guy who is played by Tom Hanks is waiting in Savannah to meet up with his female friend named Jenny and tells the story of his life in which he has viewed many historical events and has done a lot of stuff such as play football, fight in the Vietnam war, fish for shrimp, plays table tennis, drinks Dr. Peppet, and runs across the USA multiple times? Then he gets married where his mom and Lieutenant with his titanium-alloy leg and other peopl come watch it? I can't remember the name of that movie!