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Surviving in the Military Enlisted: Conscripted soldiers, not professional soldiers. Higher ranks signify increased combat and mission capabilities. Private (PV1) Private First Class (PFC) Corporal (CPL) Sergeant (SGT) Non-Commissioned Officers (NCO): Staff Sergeant < Sergeant First Class < Master Sergeant < Sergeant Major Sergeant Major: Command Sergeant Major Master Sergeant: First Sergeant, Administrative Officer, NCO in charge Sergeant First Class: Platoon Sergeant, Weapons Platoon Leader, Officer in charge Staff Sergeant: Company-level Senior Squad Leader Company Grade Officers: Captain > First Lieutenant > Second Lieutenant Captain: Company Commander, Regiment-level or higher staff First Lieutenant: (Recon) Platoon Leader, Battalion-level staff Second Lieutenant: Platoon Leader, Staff (non-combat branch) Field Grade Officers: Major < Lieutenant Colonel < Colonel Colonel: Regiment Commander, Brigade Commander, Division Chief of Staff, Corps-level staff Lieutenant Colonel: Battalion Commander, Division-level or higher staff/Section Chief, Army Command-level or higher staff officer Major: Operations Officer, Regiment-level staff, Division-level or higher staff General Officers: General > Lieutenant General > Major General > Brigadier General General: Chairman of the Joint Chiefs of Staff, Chief of Staff (Army/Navy/Air Force), Ground Operations Commander, Second Operations Commander, Deputy Commander of ROK-US Combined Forces Command Lieutenant General: Chief of Staff, Superintendent of Military Academy Major General: Commander and Staff, ROK Army Headquarters Department Head Brigadier General: Ministry of National Defense Section Chief, Brigade Commander, Army Command-level General Staff, Commander, Unit Commander, Support Group Commander, Welfare Group Commander, Superintendent of Armed Forces Nursing Academy