Many more artillery pieces had arrived and been dug into batteries. In June, a third bombardment was followed after two days by a successful attack on the Mamelon, but a follow-up assault on the Malakoff failed with heavy losses. During this time the garrison commander, Admiral Nakhimov fell on 30 June 1855.:378 Raglan having also died on 28 June.:460 In August, the Russians again made an attack towards the base at Balaclava, defended by the French, newly arrived Sardinian and Ottoman troops.:461 The resulting battle of Tchernaya was a defeat for the Russians, who suffered heavy casualties.