Complex sentence: Brito, from Las Cruces, New Mexico, whose father was a Yaqui Indian stagecoach operator, was 21 when he enlisted with his brother in May 1898.
Split into simpler sentences: Brito, from Las Cruces, New Mexico, whose father was a Yaqui Indian stagecoach operator. XXXXX was 21 when he enlisted with his brother in May 1898.