There were later allegations that the Russian commander Count Tottleben had received a personal bribe from the Prussians to spare the city, and he was subsequently tried and found guilty of being a spy.
After a series of successes over Prussian forces in 1759, the following year proved to be a disappointment for the Allies as their invasion of Silesia had stalled, in spite of their overwhelming manpower, and they had been defeated at the Battle of Liegnitz in August 1760.
[4] The plan drawn up by the allies envisaged a feint towards Guben by the main army, which would allow a force under Heinrich Tottleben to detach itself and hurry northwards to strike at Berlin.
[6] Having received word of the danger to Berlin, Prince Eugene of Württemberg led his troops back from fighting the Swedes in Pomerania while a contingent from Saxony also arrived, boosting the defenders to around 18,000.
A prominent merchant Johann Ernst Gotzkowsky took over the negotiations on behalf of Berlin, and was able to persuade Tottleben to reduce the levy to 1.5 million Thalers.
The Russians, represented by First Major John O'Rourke, were concerned about improving their international reputation generally acted with greater restraint and emphasized respect towards the inhabitants.
A rumour that Frederick the Great was marching to the rescue of Berlin with his superior forces prompted the commanders to withdraw from the city as they had completed their major objectives.