 The Marine Corps has realized that the fastest growing group in both the United States and the Marines are Hispanics, and have joined the rest of the United States in the celebration of the contributions which Hispanics in the United States Marines Corps have made to that military institution by celebrating National Hispanic Heritage Month from September 15 through October 15.Hispanics have been more highly represented among enlisted personnel in the Marine Corps than in the other services.On June 27, 2003, Sergeant Major John L. Estrada, originally from the nation of Trinidad and Tobago, became the 15th sergeant major of the United States Marine Corps and the first person of Hispanic descent promoted to that rank.