War of the Third Coalition

Spain declares war on Great Britain
The action of 5 October 1804, Francis Sartorius
1804 Oct 5

Spain declares war on Great Britain

Cabo de Santa Maria, Portugal

The Battle of Cape Santa Maria was a naval engagement that took place off the southern Portuguese coast, in which a British squadron under the command of Commodore Graham Moore attacked and defeated a Spanish squadron commanded by Brigadier Don José de Bustamante y Guerra, during peace time. As a result of this action, Spain declared war on Great Britain on 14 December 1804