The city of Hamburg was one of the most powerful fortresses east of the Rhine. After being freed from Napoleonic rule by advancing Cossacks and other following Coalition troops it was once more occupied by Marshal Davout's French XIII Corps on 28 May 1813, at the height of the German Campaign during the War of the Sixth Coalition from French rule and occupation.
The city of Hamburg was a strategically important fortress that played a significant role in the Napoleonic Wars and the subsequent War of the Sixth Coalition. It was captured by the French but later liberated by allied forces during the German Campaign.