| Leighton Battery | |
|---|---|
| Buckland Hill, Mosman Park, Western Australia in Australia | |
 Construction of No. 2 gun position, Leighton Battery, February 1943 | |
 Location of Leighton Battery | |
| Coordinates | 32°01′04″S 115°45′24″E / 32.01778°S 115.75667°E |
| Site information | |
| Owner | Minister for Defence |
| Operator | Australian Army |
| Open to the public | Above-ground installation freely accessibleUnderground installation open on the first Sunday of every month |
| Condition | Now the Leighton Battery Heritage Site operated by the Royal Australian Artillery Historical Society of Western Australia |
| Site history | |
| Built | 1941 |
| Built by | 7th Troop of the Royal Australian EngineersRoyal Australian ArtilleryPublic Works Department of Western Australia |
| In use | 1941−1963 |
| Events | Part of the Fremantle Fortress during World War II |
| Official name | Leighton Battery |
| Designated | 27 August 1999 |
| Reference no. | 3247 |
Leighton Battery at Buckland Hill, Mosman Park, Western Australia, was part of the Coastal defences of Australia during World War II and the Fremantle Fortress, protecting Fremantle Harbour.
The battery initially consisted of two 6-inch Mk VII naval guns, operational from February 1943. The two guns were removed in 1945 and replaced by three 5.25 inch dual purpose coastal artillery/antiaircraft guns. While it was envisioned to have all major ports in Australia protected by these type guns, the Leighton Battery became the only one ever operational. The battery was dismantled and the equipment disposed of for scrap in 1963.
The battery site was added to the Western Australian State Register of Heritage Places in August 1999 and was awarded an Engineering Heritage National Marker in November 2014. While some above-ground installations have been restored, the underground installations consisting of underground tunnels, rooms, observation post and semi-buried command post are considered an outstanding example of technical achievement.