This engraved plan depicts the siege of the Château de Harbourg from November 28 to December 27, 1757, during the Seven Years' War. The map illustrates the star-shaped fortress at Harburg (modern-day Germany), located on the bank of the Elbe River, with surrounding fieldworks, roads, and batteries positioned by the attacking forces. The legend details key strategic elements, including batteries of various calibers, troop movements, mortar placements, and encampments. A frigate, manned by allied troops, is shown cruising on the Elbe to cut communications with the château.
Harburg, in Lower Saxony near Hamburg, was contested during the Seven Years' War as part of broader military engagements between European powers. The plan emphasizes the engineering aspects of siege warfare, highlighting both the defensive bastions of the château and the offensive emplacements of the besieging army.
Published in The Hague in 1765, this plan is part of a series of military maps documenting key engagements of the war.