The "1776" on the United States Army Intelligence Service seal refers to the formation of Knowlton's Rangers.

In January 1863, Major General Joseph Hooker established the Bureau of Military Information for the Union Army during the Civil War, headed by George H. Sharpe.

Allan Pinkerton and Lafayette C. Baker handled similar operations for their respective regional commanders.

On June 19, 1942, the Military Intelligence Training Center at Camp Ritchie, Maryland, was formed.

This group is now widely known as the Ritchie Boys and are credited with gathering over half of the actionable intelligence in the European Theatre.

Most Ritchie Boys were fluent in European languages and could easily interrogate prisoners of war and civilians who knew vital information.

What began as an experimental military intelligence language-training program launched on a budget of $2,000 eventually became the forerunner of today's Defense Language Institute for the tens of thousands of linguists who serve American interests throughout the world.

Instructors, including native speakers of more than thirty languages and dialects, were recruited from all over the world.

Additionally, combat intelligence training (including order of battle techniques, photo interpretation, prisoner of war interrogation, and censorship) was transferred from the Army General School at Fort Riley, Kansas, to Fort Holabird, giving the commanding general the additional title of commandant, U.S. Army Intelligence School.

Some of the key components include: The United States Army Intelligence Museum is located at Fort Huachuca, Arizona.