High Quality Content by WIKIPEDIA articles! Lord Airey`s Battery is an artillery battery in the British Overseas Territory of Gibraltar. It is located near the southern end of the Upper Rock Nature Reserve, just north of O`Hara`s Battery. It was named after the Governor of Gibraltar, General Sir Richard Airey. Construction of the battery was completed in 1891. The first gun mounted on the battery was a 6-inch breech loading gun, which was replaced with a 9.2-inch Mark X BL gun by 1900. The gun at the battery was last fired in the 1970s. In 1997, it was discovered that Lord Airey`s Shelter, adjacent to Lord Airey`s Battery, was the site chosen for a covert World War II operation that entailed construction of a cave complex in the Rock of Gibraltar, to serve as an observation post. The battery is listed with the Gibraltar Heritage Trust.