Camp San Luis Obispo, founded in 1928 amid the starkly beautiful rolling hills north of San Luis Obispo, has an ideal central California location. It is the original home of the California National Guard and remains today the Guard's principal training facility. In 1941 the U.S. Army commandeered the post, enlarging it to over 10,000 acres for the training of half a million soldiers and 42 infantry divisions. Salinas Dam, 20 miles away, was built to provide a dependable source of water for the troops. Reverting to the state after major conflicts, the camp is also the headquarters for the U.S. Army Reserve, California Specialized Training Institute, and a host of agencies and academies. It remains on the frontline for modernizing the military into the 21st century.