sentences:  The new name commemorates the exploits of Lieutenant-Commander Norman Holbrook.The initial service on the line consisted of a mixed train that operated in both directions on Mondays, Wednesdays and Fridays, connecting with the overnight Mail Trains to and from Sydney.From 18 December 1923, the thrice weekly mixed train was replaced by a CPH railmotor which operated twice a day in each direction on Tuesdays, Thursdays and Saturdays.