Westphalia, Hesse and Lower Saxony Electoral Saxony Brandenburg Silesia East Prussia Pomerania Iberian Peninsula Naval Operations The Blockade of Stralsund occurred during the Seven Years' War when a Prussian force invested the Swedish garrison of Stralsund, the capital of Swedish Pomerania.

Sweden had entered the Seven Years' War in 1757, joining France, Russia, Austria and Saxony in their alliance against the Prussians.

During Autumn 1757, with Prussian forces tied up elsewhere, the Swedes had been able to move south and occupy a large portion Pomerania.

Following the retreat of the Russians from East Prussia, after the Battle of Gross-Jägersdorf, Frederick the Great ordered his General Hans von Lehwaldt to move west to Stettin to confront the Swedes.

[6] When the 1758 campaigning season commenced, the Prussian forces around Stralsund were needed more urgently on the Russian front and were mostly withdrawn - bringing an effective end to the blockade.