By the turn of the twentieth century, six 10-inch rifled muzzle-loading guns were present at Middle Hill Battery.

Middle Hill Battery is in Gibraltar, the British Overseas Territory at the southern end of the Iberian Peninsula.

This was primarily to prevent desertions, as soldiers had, on a number of occasions, lowered themselves down the cliff by means of ropes.

[8] In January 1783, some sparks started a fire in an ammunition box at one of the buildings in the Middle Hill Battery complex.

The changes at the turn of the twentieth century are shown in the 1908 Ordnance Survey map (pictured at left), which demonstrates two rows of three guns.

[4][5][10] Middle Hill Battery was an excluded area for decades, where unauthorised entry by the public was considered a criminal offence.

The artillery magazine and storage rooms are still present, with one of them converted for recreational purposes to the Aardvark Bar, for Royal Air Force personnel.

Stairs lead to the highest point of Middle Hill, marked by a large concrete base.