You guessed it: the Colliers don't just share a last name. They're brothers, too.
My Brother Sam Is Dead puts the "historical" in "historical fiction." Even though Tim's story is largely fictional, tons of the characters in this book were real people. You can read more about all the historical facts in the authors' afterward called "How much of this book is true?"
Remember Sam's first captain? His name was Benedict Arnold, and he's a real guy with a really crazy story. We'll give you the short version: he goes from Patriot hero to total traitor. Yep, super crazy stuff.