The next year Apraksin took up the overall command of the army invading Prussia and won the Battle of Gross-Jägersdorf on 30 August 1757, albeit with heavy losses. The Russian court, upon receiving news of the victory, expected Apraksin to overrun all of Prussia. Instead, on hearing that Empress Elizabeth had suffered a severe relapse in health, Apraksin crossed the Neman River and returned to Russia, intending to support the heir to the throne (the future Peter III of Russia, who represented the interests of Frederick II of Prussia) in the event of the Empress's death. According to another interpretation, he was recalled by Bestuzhev whose enemies plotted his downfall.