Russian reinforcements under Prince Pozharsky eventually starved the Commonwealth garrison (there were reports of cannibalism) and forced its surrender on 1 November (though some sources give 6 November or 7 November) after the 19-month siege. A historian (Parker) writes vividly of the Polish soldiers: "First they ate grass and offal, then they ate each other, and the survivors finally surrendered. The Moscow Kremlin fell on 6 November 1612." On 7 November, the Polish soldiers withdrew from Moscow. Although the Commonwealth negotiated a safe passage, the Russian forces massacred half of the former Kremlin garrison forces as they left the fortress. Thus, the Russian army recaptured Moscow.