General Sir William Fenwick Williams, 1st Baronet was a Nova Scotian military leader for the British during the Victorian era.

The siege of Kars was the last major operation of the Crimean War. In June 1855, attempting to alleviate pressure on the defence of Sevastopol, Emperor Alexander II ordered General Nikolay Muravyov to lead his troops against areas of Ottoman interest in Asia Minor. Uniting disparate contingents under his command into a strong corps of 25,725 soldiers, 96 light guns, Muravyov decided to attack Kars, the most important fortress of Eastern Anatolia.