Mountaineering has long been a necessary skill for U.S. service members in battle and at the Army Mountain Warfare School, they learn from some of the best. Source: www.war.gov

From its introduction into the Navy in the late 1800s, baseball became a phenomenon that U.S. sailors — many of whom were Major League pros — helped to spread around

The Space Force structure is unique. While it is a separate and distinct branch of the armed services, it is organized under the Department of the Air Force. Source: www.war.gov

From Revolutionary War battlefields to today’s frontlines, the Purple Heart has served as a recognition of sacrifice and heroism. How well do you know the history behind America’s oldest military

Undefeated in battle, the USS Constitution is more than 200 years old and still afloat. Can you emerge victorious in a quiz on this venerable Ship of State? Source: www.war.gov

Meet Boston’s only undefeated team: the crew aboard Old Ironsides! Step aboard the oldest and toughest warship in all seven seas, which doubles as a living — and floating —

The department helped make another “Mission: Impossible” possible. Military expertise, feedback and equipment provided authenticity to make the magic of Hollywood feel real. Source: www.war.gov