Yuma Proving Ground

• Established During World War II: Yuma Proving Ground (YPG) was established in 1943 as the "U.S. Army Corps of Engineers Yuma Test Branch" to test military bridging equipment and vehicles needed for the war effort. • Massive Land Area: YPG covers over 1,300 square miles in southwestern Arizona, making it one of the largest military installations in the world. • Desert Environment Testing: Its arid desert climate provides ideal conditions for testing military equipment under extreme heat and dust, simulating environments soldiers might encounter in the Middle East and elsewhere. • Critical for Artillery Testing: YPG is the Army’s primary site for testing artillery, mortars, tank cannons, and munitions, including the famous M777 howitzer and Excalibur precision-guided artillery shells. • Unmanned Aerial Systems: The proving ground is a leading site for the development and testing of unmanned aerial vehicles (UAVs), including drones used in modern warfare. • Historic Bridge Testing: During World War II, YPG tested pontoon bridge designs that were later used for historic river crossings, such as the Allied crossing of the Rhine River in 1945. • Secret Cold War Projects: In the 1950s and 1960s, YPG was involved in secret tests, including work related to atomic weapons effects and the testing of ballistic missile re-entry vehicles. • Wildlife Sanctuary: Despite its military mission, YPG is home to diverse wildlife, including bighorn sheep, wild horses, and numerous bird species, and works to protect endangered species on its land. • Longest Overland Artillery Range: YPG boasts the longest artillery range in the United States, allowing for the testing of long-range munitions and precision-guided weapons. • Home of the General Patton Memorial Museum: The Yuma Proving Ground Heritage Center showcases the history of military testing in the region and honors General George S. Patton, who trained troops in desert warfare in the nearby area during WWII.