Without a formal declaration, war begins between Britain and Spain,
sparked by the latter's siege of Gibraltar. Spain issues
commissions for attacks against British islands and against British
shipping.
Citation:
Editors. "Spanish lay siege to Gibraltar".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17310, accessed 25 May 2013.]