We have compiled thousands of U.S. Army, Air Force, Marine Corps, Navy, and Joint military publications and put them into one easily searchable library. This is the largest collection of these public domain resources in one place, with documents dating from WWII through the most current publications, covering everything from warfighting and radio operations to equipment maintenance, medical care, engineering, and more. [More]
This looks like quite the resource. Especially for the way things are going.
[Via Ron W]