Directory of Spartan Branch units

==Headquarters units==
===High echelon commands===
*Spartan Branch Headquarters Regiment (SBHR)
*Spartan Intelligence and Covert Actions Group (SICA)
*Infinity Spartan Forces
===Component commands and corps===
*Spartan Infantry Corps
*The Spartan Hippeis 
*Spartan Aviation Command
*Sustainment Command
==Divisions==
*Commando Support Division — originally Commando Sustainment Brigade
==Brigades==
*Commando Sustainment Brigade — defunct; currently Commando Sustainment Division
==Regiments==
===Administrative===
====Infantry====
by order of seniority
*1st Spartan Regiment
*2nd Spartan Regiment
*3rd Spartan Regiment (Training) — historically an infantry regiment, operationally subordinate to Sustainment Command
*Frontier Regiment — originally 4th Spartan Regiment
*Promethean Regiment (6th Light and Dragoons) — originally 6th Spartan Regiment
*5th Spartan Regiment
====Cavalry====
*Commando Light Dragoons
*Commando Hussars
===Sustainment===
*Commando Training Regiment
*Commando Medical Wing
===Tactical===
====Cavalry====
by order of seniority
*1 (Mounted) Regiment — also known as 1st Commando Light Dragoons
*2 (Armored) Regiment — also known as 2nd Commando Hussars
*3 (Mechanized) Regiment — also known as 3rd Commando Light Dragoons
*4 (Mounted) Regiment — also known as 4th Commando Light Dragoons
*5 (Armored) Regiment — also known as 1st Commando Hussars
*6 (Mounted) Regiment — defunct; currently 12 (TERCEIRA) Mounted Commando and formerly known as 6th Commando Light Dragoons
*7 (Mounted) Regiment — also known as 7th Commando Light Dragoons
====Sustainment====
*1st Regiment Commando Support
*2nd Regiment Commando Support
*3rd Regiment Commando Support
*4th Regiment Commando Suppport
*Frontier Regiment Commando Support
==Groups (large)==
===Field logistics===
*1 Logistics Group
*2 Logistics Group
===Engineering===
*Mission Hardware Procurement Group
*Systems Maintenance and Development Group
===Medical===
*Field Medicine Group
==Battalions==
===Commandos===
*1 (PROMETHEUS) Commando 
*2 (REACH) Commando
*3 (TORPEDO) Commando
*4 (ONYX) Commando
*5 (GAMMA) Commando
*6 (CURRAHEE) Commando
*7 (DELTA) Commando
*8 Commando
*9 Commando
*10 (GUARDS) Commando
*12 (TERCEIRA) Mounted Commando
*13 Commando
*14 Commando
*15 Commando
*16 Commando
*17 Commando
*18 Commando
*19 Commando
*20 Commando
===Mounted squadrons===
*Pegasus Squadron — 1/1st Commando Light Dragoons
*Centaur Squadron — 2/1st Commando Light Dragoons
*Griffin Squadron — 3/1st Commando Light Dragoons
*Alduin Squadron — 1/4th Commando Light Dragoons
*Odahviing Squadron — 2/4th Commando Light Dragoons
*Mirmulnir Squadron — 3/4th Commando Light Dragoons
*1/6th Commando Light Dragoons — defunct; currently 12 (TERCEIRA) Mounted Commando
*Minka Squadron — 1/7th Commando Light Dragoons
*Alectryon Squadron — 2/7th Commando Light Dragoons
*Cetan Squadron — 3/7th Commando Light Dragoons
===Mechanized squadrons===
*Praying Mantis Squadron — 1/3rd Commando Light Dragoons
*Boxer Mantis Squadron — 2/3rd Commando Light Dragoons
*Mendica Mantis Squadron — 3/3rd Commando Light Dragoons
*Leafy Mantis Squadron — 4/3rd Commando Light Dragoons
===Armored squadrons===
*Basilisk Squadron — 1/2nd Commando Hussars
*1/5th Commando Hussars