Great Siege of Gibraltar

http://en.wikipedia.org/wiki/Great_Siege_of_Gibraltar

What a great story! Boy's Own stuff

The Great Siege of Gibraltar was an unsuccessful attempt by Spain and France to capture Gibraltar from the British during the American War of Independence. This was the largest action fought during the war in terms of numbers, particularly the Grand Assault of the 18 September 1782. It was the longest siege endured by the British Armed Forces, as well as being one of the longest continuous sieges in history.