FM 21-76,  Department Of The Army Field Manual:  SURVIVAL

This manual has been written to help you acquire certain skills. It tells how to travel, find water and food, shelter yourself from the weather, and care for yourself if you become sick or injured. You can remain alive anywhere in the world if you keep your wits. Remember that nature and the elements are neither your friend nor your enemy-they are actually disinterested. Instead, it is actually your determination to live and your ability to make nature work for you that are the deciding factors.