Count Leopold Joseph von Daun, in a letter to Empress Maria Theresa in January 1758, pressed for a more important role for the "Generalquartiermeister" (Chief of Staff). The failures in the army, especially at the Battle of Leuthen made it clear that Austria had no "great brain" and the command needed to spread the workload to allow the Commander-in-chief the time to consider the strategic picture. The 1757 regulations had created the "Grosse Feldgeneralstab" and "Kleine Generalstab" (large and small general staff) and after changes in 1769, a permanent staff of 30 officers was established under the direction of Franz Moritz von Lacy, which would be expanded in wartime with junior officers. The "Grosse" staff was divided into three: First, the "Intrinsecum", which handled internal administration and directing operations; secondly, external activities, including the Pioneers; thirdly, the Inspection Service, which handled the issuing of orders and prisoners of war. Alongside the General Staff was the General Adjutant, who led a group of Adjutant staff selected by the army commanders to handle the details of internal administration and collating intelligence, and answered to the Commander-in-chief. The Chief of Staff became the chief adviser to the Commander-in-chief and, in a fundamental move away from the previous administrative role, the Chief of Staff now undertook operational planning, while delegating the routine work to his senior staff officers. Staff officers were drawn from line units and would later return to them, the intention being that they would prove themselves as leaders during their time with the staff. In a battle or when the army had detached corps, a small number of staff would be allocated to the column commander as a smaller version of headquarters. The senior man, usually a Major, would be the chief of the column staff and his principal task would be to help the commander to understand what was intended.