- E-bookImprovised Weapons & Munitions – U.S. Army Ultimate HandbookU.S. Department of the Army
- E-bookImprovised Weapons and Munitions - The Official U.S. Army ManualU.S. Department of the Army
- E-bookThe Skills of Wilderness Survival - U.S. Army Official HandbookU.S. Department of the Army
- E-bookThe Skills of Wilderness Survival - U.S. Army ManualU.S. Department of the Army