The Damien High School Spartan Regiment, under the direction of Matt Ray, is comprised of students from Damien, Pomona Catholic High School and St. Lucy’s Priory. Nick Curci is the percussion director and Chris Velez directs the Color Guard. The team competes in the Western Band Association. The Spartan Regiment has five different programs: Fall Marching Band, Color Guard, Winter Indoor Drum Line, Winter Guard and Jazz Band.