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Surviving in the Military Enlisted: Conscripted soldiers, not professional soldiers. As rank increases, combat and mission capabilities improve. 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 Sergeant First Class: Administrative Supply Sergeant, Manager, Officer-in-Charge NCO Staff Sergeant: Assistant Platoon Leader, Weapons Platoon Leader, Officer-in-Charge Sergeant: Company-level Senior Squad Leader Company Grade Officers: Captain > First Lieutenant > Second Lieutenant Captain: Company Commander, Staff at Regiment level or higher First Lieutenant: (Recon) Platoon Leader, Battalion-level Staff Second Lieutenant: Platoon Leader, Staff (Non-combat branches) Field Grade Officers: Major < Lieutenant Colonel < Colonel Colonel: Regimental Commander, Brigade Commander, Division Chief of Staff, Corps-level Staff Lieutenant Colonel: Battalion Commander, Division-level or higher Staff/Section Chief, Military Command-level or higher Staff Officer Major: Operations Officer, Regimental-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, Assistant Chief of Staff at Army Headquarters Brigadier General: Ministry of National Defense Section Chief, Brigade Commander, General Staff at Military Command level, Commander, Unit Commander, Support Group Leader, Welfare Group Leader, Superintendent of Armed Forces Nursing Academy