It's perhaps one of the most important days in military history. Writers, filmmakers, historians and even poets have written about it, studied it and captured it on film. So why does it capture our imaginations? Because of the brave men who risked - and lost - their lives that fateful day. Let's test your knowledge of this incredible moment in history.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!