Sweden, Britain's ally in the Third Coalition, refused to comply with French demands and was attacked by Russia in February and by &lt;a href="Dano-Swedish%20War%20of%201808%E2%80%9309"&gt;Denmark/Norway&lt;/a&gt; in March 1808. At the same time, a French force threatened to invade southern Sweden, but the plan was stopped as the Royal Navy controlled the Danish straits. The Royal Navy set up a base outside the port of Gothenburg in 1808 to simplify operations into the Baltic Sea. The Baltic campaign was under the command of admiral James Saumarez. In November 1810 France demanded that Sweden should declare war upon Great Britain and stop all trade. The result was a phoney war between Sweden and Britain. A second navy base was set up on the island of Hanö in the south of Sweden in 1810. These two bases were used to support convoys from Britain to Gothenburg, then through the Danish straits to Hanö. From Hanö the goods were smuggled to the many ports around the Baltic Sea. To further support the convoys, the small Danish island of Anholt was occupied in May 1809. A lighthouse on the island simplified navigation through the Danish straits.