World War II brought about a considerable increase in traffic on the A&SAB. Several military bases in the vicinity of Panama City ensured the Bay Line would remain a hotbed of activity for the duration of the war. Shortly after the war in 1947, the A&SAB was granted Class I status. The company offered sleeper and coach passenger train service nightly between Panama City and Atlanta Union Station via Albany and Macon until the 1950s. The trains went over Central of Georgia Railway tracks from Dothan, Alabama, to Atlanta.