Soon after this he transferred to the Austrian service, and thence went to Russia, where he served until the fall of his patron Marshal Burkhard Christoph von Münnich put an end to his prospects of advancement.
On September 21 Finck fought, in concert with General Johann Jakob von Wunsch, the Battle of Korbitz, in which the Austrians and the contingents of the minor states of the Empire were defeated.
[1] However the subsequent catastrophe of the Battle of Maxen abruptly put an end to Finck's active career.
The Prussians had capitulated Dresden to the Austrians on September 4, and Finck was ordered by the king to Maxen (a village in the Pirna region of Saxony) to cut off the enemy's movement.
Being dangerously exposed, and having inadequate forces, Finck accordingly advised the king against such operation but followed his unchanged orders.