Lewis and Clark


Lewis and Clark’s Corps of Discovery was the Army’s first diplomatic mission. In 1804, Capt. Meriwether Lewis and 2nd Lt. William Clark explored the newly acquired Louisiana Territory and hoped to find a water passageway to the Pacific Ocean. Their exploration had lasting impacts and consequences for the Army, the Nation, and the American Indians who inhabited the land.

What was the U.S. Army’s role in the exploration and development of the American west?

What was the impact of the Lewis and Clark expedition?

How can the effects of this exploration been seen today?


William Clark
Patrick M. Gass
Meriwether Lewis