Russia entered into another war with the Ottoman Empire in 1736, prompted by raids on Ukraine by Crimean Tatars and the military campaign of the Crimean khan in the Caucasus. In May 1736, the Russian army launched an invasion of the Crimean peninsula and burned the capital of the Crimean Khanate Bakhchisarai. On June 19, the Russian Don army under the command of General Peter Lacy captured Azov. In July 1737, the Münnich army took by storm the Ottoman fortress of Ochakov. The Lacy army (now 40,000 strong) marched into the Crimea the same month, inflicting a number of defeats on the army of the Crimean khan and capturing Karasubazar. Lacy and his soldiers had to leave the Crimea, however, due to lack of supplies.