In 1854, the Crimean War broke out between the Russian Empire and an alliance of France, Great Britain, the Kingdom of Sardinia and the Ottoman Empire. One of the first battles of the War was the Battle of the Alma where allied forces convincingly defeated the Russian forces. The Siege of Sevastapol followed shortly after in September 1854; it was to last for a year at the cost of over 128,000 lives, three-quarters of which died from disease. After the siege at Sevastapol, the fighting mainly ceased and on 30 March 1856, after two years of action, the Russians negotiated a Peace Treaty at the Congress of Paris. The Treaty set the Black Sea as neutral territory, closing it to all warships, and prohibiting fortifications and the presence of armaments on its shores. The Crimean War led to a number of large-scale changes in the British Army. The sale of commissions came under great scrutiny during the war, especially in connection with the Battle of Balaclava, which saw the ill-fated Charge of the Light Brigade. This scrutiny eventually led to the abolition of the sale of commissions.