Group of military officers that assists the commander of a division or larger unit by helping to formulate and disseminate policy and by transmitting orders and overseeing their execution.
It is distinguished from staffs that consist of technical specialists (e.g., medical, police, communications, and supply officers). It appeared in its modern form in the Prussian army in the early 19th century and in other European countries after 1870. The U.S. Army created a general staff in 1903.