UNSC rank structure/UNICOM

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Enlisted ranks[unicomnote 1]

Rank code E-1 E-2 E-3 E-4 E-5 E-6 E-7 E-8 E-9
Rank Private (PVT) Private First Class (PFC) Lance Corporal (LCPL) Corporal (CPL) Sergeant (SGT) Staff Sergeant (SSGT) Gunnery Sergeant (GYSGT)[unicomnote 2]
Master Sergeant (MSGT)[unicomnote 2] First Sergeant (1SGT)[unicomnote 2]
Master Gunnery Sergeant (MGSGT)[unicomnote 2] Sergeant Major (SGTMAJ)
Typical responsibilities Boot camp and training school Initial assignment Fireteam assistant Fireteam leader Squad leader Assistant platoon leader Assistant company commander
Division administration, E-8 technical career track Assistant battalion commander, E-8 command career track
Staff lead, E-9 technical career track Assistant division commander, E-9 command career track

Officer ranks[unicomnote 1][edit]

Rank code OT WO-1 WO-2 O-1 O-2 O-3 O-4 O-5 O-6 O-7 O-8 O-9 O-10
Rank Cadet (CDT) Warrant Officer (WO) Chief Warrant Officer (WO-2) Second Lieutenant (2LT) First Lieutenant (1LT) Captain (CPT) Major (MAJ) Lieutenant Colonel (LTCOL) Colonel (COL) Brigadier General (BGEN) Major General (MGEN) Lieutenant General (LTGEN) General (GEN)
Typical responsibilities No command authority Crew chief or Army pilot Senior subject matter expert Platoon commander Company executive officer Company commander Battalion executive officer Battalion commander Brigade commander Division commander Task Force commander CENTCOM commander HIGHCOM senior staff


  1. ^ a b All table information sourced from Halo: Official Spartan Field Manual pages 142-143, except where otherwise noted.
  2. ^ a b c d Master Gunnery Sergeants can also be referred to informally as "Master Guns", while Master Sergeants in the Army and Marine Corps may be referred to as "Top".