Final answer:
The subject of this question is Social Studies, specifically related to the organization and structure of army staff positions and the coordination of personnel and resources in military operations.
Step-by-step explanation:
The subject of this question is Social Studies. In the context of military operations, it refers to the organization and structure of army staff positions and the coordination of personnel and resources. The term "general staff" is used to describe the high-ranking officers who are responsible for detailed planning and tactics during warfare.