The first land grants here were established as early as 1723. The US Government purchased privately owned land for its military post in 1790. This was only a portion of what is today known as West Point, which now covers over 16,000 acres of land. It began as a military defense post during the Revolution, but toward the end of that century, Congress saw the need for a school for the training of artillerists and engineers. In 1802, they decided upon the location of West Point as that school, and in 1812, they established it firmly with rules and requirements for entry, making it a part of the regular Army. Among the most famous of the graduates are Robert E. Lee, Ulysses S. Grant, Stonewall Jackson, John J. Pershing, Douglas MacArthur, Dwight D. Eisenhower, and George S. Patton, Jr.