general staff
group of the highest ranking military staff of a state, or the body in charge of military planning
en-US/ˈd͡ʒɛnɹəl ˈstæf/
en-GB/ˈd͡ʒɛnɹəl ˈstɑːf/
group of the highest ranking military staff of a state, or the body in charge of military planning