Cassville High School senior Tyler Hill recently enlisted in the United States Marine Corps for four years. Hill is the son of Ronnie and Kathy Stockton, of Cassville. He will attend recruit training at Marine Corps Recruit Depot in San Diego, Calif., beginning Sept. 6. During recruit training, or boot camp, Hill will learn military customs and courtesies and first aid and study a variety of military subjects. After graduating from training, new Marines learn their occupational specialties at formal schools and gain further knowledge from on-the-job training.