The ability of the battery to give cover to troops making their way to the Kings and Queens Lines was approved by the Chief Engineer William Green in 1770.

By 1859 the two guns at Hanover Battery were assisted by additional two carronades which were also 24-pounders.

[2] The 19th century photograph is by George Washington Wilson and it shows the battery looking north over the neutral ground that the batteries were built to fire upon (and where Gibraltar Airport will eventually be built).

Both the battery and gallery were named for the Hanoverian regiments who fought as part of the defending forces during the Great Siege of Gibraltar from 1779 to 1783.

[2] These lines are accessed by underground galleries where soldiers could shelter or travel safely behind enemy fire.