In spring 1855, the allied British-French commanders decided to send an Anglo-French naval squadron into the Azov Sea to undermine Russian communications and supplies to besieged Sevastopol. On 12 May 1855, British-French warships entered the Kerch Strait and destroyed the coast battery of the Kamishevaya Bay. On 21 May 1855, the gunboats and armed steamers attacked the seaport of Taganrog, the most important hub near Rostov on Don. The vast amounts of food, especially bread, wheat, barley, and rye that were amassed in the city after the outbreak of war were prevented from being exported.