There are thousands of service dogs working alongside dedicated men and women in different military branches. Specially trained dogs have been involved in military operations around the world for a long time but were incorporated into the United States military at the start of the Revolutionary War. At that time, dogs were used primarily as pack animals although by World War I, they also helped kill rats in war zone trenches.
By World War II, the value of the service dog became increasingly obvious at which time they began to offer support in several different types of military operations. In the United States alone, over 10,000 highly trained dogs were deployed during the Second World War, holding positions of messengers, scouts, sentries, and mine detectors. Today, service dogs maintain presence within all of the United States military branches, serving nationally and on foreign grounds.