Shaw also recorded with small jazz groups drawn from within the ranks of the various big bands he led. He served in the US Navy from 1942 to 1944, (during which time he led a morale-building band that toured the South Pacific amidst the chaos of World War II) and, following his discharge in 1944, he returned to lead a band through 1945. Following the breakup of that band, he began to focus on other interests and gradually withdrew from the world of being a professional musician and major celebrity, although he remained a force in popular music and jazz before retiring from music completely in 1954.