The Battle of Mirbat took place during the 1970s Dhofar Rebellion in Oman which was supported by communist guerillas from South Yemen. Britain assisted the Oman government by sending elements of its Special Air Service to both train soldiers and compete against the Adoo guerillas for the "hearts and minds" of the Omani people.

At 6am on 19 July 1972 the Adoo retaliated against the British, sending 250 well-armed men against the isolated British Army Training Team (BATT) house near Mirbat (commanded by Captain Mike Kealy). Against overwhelming odds, the nine SAS soldiers stationed there resisted fiercely, holding the Adoo back for several hours until reinforcements could arrive. Defeated, the Adoo withdrew at about 12:30pm.


Mirbat Castle, site of the Battle of MirbatThe 25 pounder gun, now known as the "Mirbat gun" which was used by Sergeant Talaiasi Labalaba (a Fijian SAS soldier) during the siege is now housed in the Firepower museum of the Royal Artillery at the former Woolwich Arsenal. Sgt Labalaba was killed in action. He displayed notable bravery by continuing to fire the 25 pounder in spite of being seriously wounded. Labalaba's actions helped to keep the insurgents pinned down until a relief force arrived. Labalaba was awarded a posthumous Mention in Dispatches for his actions in the Battle of Mirbat, although some of his former comrades have campaigned for him to be award a posthumous Victoria Cross.

Sir Ranulph Fiennes alleged in his book 'The Feathermen' that Mike Kealy was murdered years later in the Brecon Beacons by an Arab terrorist cell.