In 1475 the Ottoman's attempt to bring Moldavia under their control, at winter by using an army of Rumelian local levies, ended disastrously with a defeat in the Battle of Vaslui. During the proper military campaign season, the Ottomans assembled a large army of about (most likely exaggerated) 90.000-150.000 men, under the command of the Sultan, Mehmed II and entered Moldavia in June 1476. Meanwhile, groups of Tartars from the Crimean Khanate (the Ottomans' recent ally) were sent to attack Moldavia. Romanian sources may state that they were repelled,. Other sources state that joint Ottoman and Crimean Tartar forces "occupied Bessarabia and took Akkerman, gaining control of southern mouth of Danube. Stephan tried to avoid open battle with the Ottomans by following a scorched-earth policy." In the process the Moldavians forces ended up being dispersed throughout the country, leaving only a small force of about 12–20.000 men, led by Ştefan cel Mare himself, to face the main Ottoman attack.