Sallie, the Staffordshire Terrier who served as the mascot of the 11th Pennsylvania Volunteer Infantry during the Civil War, was found guarding wounded soldiers on the battlefield after getting separated from her regiment at the Battle of Gettysburg.

Sallie - Civil War

Sgt. Stubby, the most decorated war dog of World War I, served with the 102nd Infantry, 26th Yankee Division, and displayed extraordinary bravery by warning soldiers of incoming shells and gas attacks, as well as capturing a German spy.

Sgt. Stubby - World War I

Chips, a German Shepherd/Collie/Husky mix, became the most decorated military dog of World War II, serving with General Patton's Seventh Army and earning the Silver Star for valor and the Purple Heart for injuries sustained in the line of duty.

Chips

Nemo - Vietnam War

Nemo A534, a German Shepherd, served with the Air Force in the Vietnam War and played a crucial role in saving his handler, Airman Robert Throneburg, during a firefight with Viet Cong guerrillas.

Cairo, the Belgian Malinois member of the elite Navy SEALs, participated in the historic Operation Neptune Spear that took down Osama Bin Laden, tasked with securing the perimeter and tracking down potential escapees.

Cairo - Operation Neptune Spear

Lucca, a remarkable German Shepherd/Belgian Malinois mix, completed two tours in the United States Marine Corps, detecting over 400 explosive devices and saving numerous lives before tragically losing a leg in Afghanistan due to an IED explosion.

Lucca - Iraq