A lot of preventive medicine in the U.S. Army is similar to civilian medicine, but when troops are traveling to exotic locations or are out on the battlefield, they encounter illnesses that most of us don't have to worry about. Think you know a lot about preventive Army medicine? Test your knowledge with this quiz!
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!