Can you define the three levels of managers and what their responsibilities are?

Strategic manager: Senior executives with a overall responsibility for the firm. They develop companys goals, focus on long-term issues and emphasize the growth and effectivness of the organization. Concerned with the interaction between the organization and its external environment. Tactical manager: Are middle-managers that is responsible for translating the general goals and plans developed by the strategic managers into specific objectives and activites. They focus on shorter time horizon and the coordination of resources. Operational Managers: Lower-level managers who supervise the operations of the organization. Are directly involved with employees and are responsible to implement the strategic plans developed with tactical managers. Are the link between management and staff.