A retired Australian Army major accused of drowning his wife five years ago has walked free from prison and had an ankle bracelet fitted at a Brisbane police station as he awaits trial.

Graeme Davidson was granted bail in the Brisbane Supreme Court on Friday morning and released from the high-security Brisbane Correctional Centre at about 6pm.

Davidson's daughters drove to the prison at Wacol, about 20km south-west of the central business district, and accompanied their father back to the Brisbane Watch House.

Dressed in a black polo shirt and beige pants, the 56-year-old was smiling as he arrived at the Roma Street police station just before 6.30pm and used the intercom to state he required a personal monitoring device.

'I hope we've got all the paperwork,' Davidson told daughters Brooke and Robyn as he waited to be let inside.