locomotive was also used to transport soldiers during World War II. Although it was always painted "Southern Pacific" or "Southern Pacific Lines", it actually worked for SP subsidiaries. The state of Texas had a law that required railroads operating in the state to be based there. SP owned the Galveston, Harrisburg, & San Antonio, and sent 745 to work for it. Later 745 worked for another Texas-based, SP-owned line, the Texas and New Orleans Railroad . In these roles 745 operated mostly between east Texas and the east end of the SP system in New Orleans.