Shelford Bidwell & Dominick Graham 
Fire-Power [PDF ebook] 
The British Army Weapons & Theories of War 1904-1945

The great siege of Gibraltar was the longest recorded in the annals of the British army. Between 1779 and 1783 a small British force defended the Rock against the Spanish and the French who were determined take this strategically vital point guarding the entrance to the Mediterranean. The tenacity and endurance shown by the attackers and defenders alike, and the sheer ingenuity of the siege operations mounted by both sides, make the episode an epic of military history, and the story gives us a fascinating insight into the realities of siege warfare. In this, the first full study of the siege for over 40 years, James Falkner draws on a wide range of contemporary sources to tell the exciting tale of a huge and complex operation.