On 11 September 1701 Governor General Dahlbergh wrote a series of letters about the recent events in eastern Livonia, where a Russian force had attacked Col. Schlippenbachs corp. To the Chancery in Stockholm and Major General Horn in Narva Dahlbergh sent a brief account and expressed his concern for the future. To Charles XII he sent a longer letter, enclosing a report from Schlippenbach himself. The courier, Lt. Col. Stackelberg, had been present during the Russian attack and could expand on the subject if necessary. What was Dahlbergh's primary concern? Well, the supplies collected for the expected return of the King's army. The original plan had of course been to drive the Saxon army away from Riga and then at some point go back to eastern Livonia in order to prepare for an assault on Pskov. As late as 16 September Dahlbergh appears to have believed that this was still in the cards, although the lateness of the season made him believe that it would take a considerable time for the King's army to get there.
A couple of days later Dahlbergh was informed of a new decision. Charles XII had ordered two regiments (Fritz Wachtmeister's and Erich Stenbock's) to leave Mitau and join Schlippenbach's force along with 1,000 men from the garrison of Riga. When writing to the Chancery in Stockholm on 23 September the Governor General could add a bit of juicy gossip to this news: there had reportedly been a great uprising in Moscow. The German Quarter had been thoroughly plundered and a number of the Czar's favorites, including Anna Mons, killed.
Source: LVVA, fond 7349, op. 1, vol. 73.