Napoleon Bonaparte’s attempt to make his brother Joseph king of Spain provoked widespread revolts which forced Joseph to leave the country. To defend his position he has to send most of the Grand Army to Spain.
Editors. "Joseph Bonaparte made king of Spain". The Literary Encyclopedia. First published 01 February 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=4417, accessed 12 February 2016.]