staff officer(redirected from S4 (military)
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(Military) a commissioned officer serving on the staff of a commander, service, or central headquarters
a commissioned officer who is a member of a military staff.
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|Noun||1.||staff officer - a commissioned officer assigned to a military commander's staff|
armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
commissioned officer - a military officer holding a commission
judge advocate - a staff officer serving as legal adviser to a military commander
quartermaster general - a staff officer in charge of supplies for a whole army