He signed up with Universal Studios in 1963 and guest-starred on Wagon Train, Run for Your Life, and others. Beginning in 1967, he co-starred on Ironside as Det. Sgt. Ed Brown. During the sixth season of Ironside, he and Burr co-starred in the TV movie Portrait: A Man Whose Name Was John. Galloway stayed through the entire run of Ironside until its cancellation in 1975. He was reunited with Burr on two Perry Mason television movies before reprising his role on Return to Ironside in 1993.