English: Dwight Eisenhower, far right, with three friends (William Stuhler, Major Brett, and Paul V. Robinson) in 1919, four years after graduating from West Point. The 29-year-old lieutenant colonel (Bvt.) participated in the first transcontinental military convoy. The convoy left Washington, D. C. on July 7 and covered 3,200 miles, over half of which were dirt roads. They followed the Lincoln Highway, a transcontinental route established in 1913. It entered San Francisco after nearly 60 days of travel. (From the Eisenhower Presidential Museum archives.)