Personnel who assist their superior in carrying out an assigned task WordNet 3.0 & Open English WordNet

A military staff or general staff is a group of officers, enlisted and civilian staff who serve the commander of a division or other large military unit in their command and control role through planning, analysis, and information gathering, as well as by relaying, coordinating, and supervising the execution of their plans and orders, especially in case of multiple simultaneous and rapidly changing complex operations. Wikipedia

The organ of military command and planning Wikipedia Disambiguation

Group of military officers that are responsible for the needs of a unit Wikidata