The Regimental Headquarters Company contained several components required for the command & control and support of the entire Corsair Regiment: the Command Platoon, the Fire Support Platoon, the Forced Entry Signals Platoon, and the Forward Medical Support Platoon. Though not Corsair units, other special-purpose units were attached to each Corsair Regiment to augment its activities: one Unconventional Warfare Company, one Combat Intelligence Company, and one Force Reconnaissance Company. The Corsair Regiment itself was comprised of one Headquarters Company and three Corsair Battalions, consisting of two Airborne Battalions and one , answerable to the Brigade's commander, a The commanding officer of each Corsair Regiment was a The Forward Aircraft Wing established air superiority and provided aviation support to the Corsair Regiment, while the Forward Logistical Support Regiment provided combat support services, logistical support, signals support, and high-level medical support. Of the three principal components of each Expeditionary Brigade, the Corsair Regiment fought alongside a Marine Forward Aircraft Wing and a Marine Forward Logistical Support Regiment, and was thus the principal surface warfighting force of the Expeditionary Brigade. The Marine Corsairs were organized into Corsair Regiments (Airborne), with one Regiment attached to each Marine Expeditionary Brigade.
In contingency operations or during Alliance strikes, the Corsairs were responsible for initial strikes and destabilization of the enemy, in order to prepare them for redundant assault by conventional infantry. To this end, Marine Expeditionary Brigades and Marine Expeditionary Units were not comprised of traditional infantry, but were rather formed around elite airborne infantry - Corsairs.
Instead, they were directly assigned to Marine Expeditionary Brigades or Marine Expeditionary Units, smaller Marine units of expeditionary nature responsible for contingency operations and acting as shock troops. Though they were not Special Operations Forces and did not receive the elitist "N" prefix for their Military Vocational Code, the Corsairs were elite infantry were not the traditional rifle infantry that comprised the bulk of a conventional Marine Division, which were responsible for full-scale warfighting.