Military Surgery Basics
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Direct answer
Battlefield trauma teaches one lesson above all: exsanguination from limb haemorrhage is the leading preventable death, so military care reorders civilian ATLS — catastrophic external bleeding is controlled before the airway (C-ABC), encoded as MARCH: Massive haemorrhage, Airway, Respiration, Circulation, Head injury and Hypothermia. Care is delivered in phases under fire — Tactical Combat Casualty Care runs care under fire, tactical field care, and tactical evacuation care — and in echelons: Role 1 point-of-wounding buddy aid and unit medic; Role 2 forward surgical team performing damage control surgery and resuscitation with basic holding capacity; Role 3 combat support hospital with specialist surgery and intensive care; Role 4 definitive care outside the theatre, typically in the home country. Weapon injuries differ from civilian trauma — high-velocity projectiles and explosive fragments create cavitational, multi-fragment, heavily contaminated wounds — so war wounds undergo thorough excision of devitalised tissue, are left open, and close by delayed primary closure at four to six days.
What you must remember
- MARCH over ABC: tourniquet the exsanguinating limb before anything else; combat application tourniquets and haemostatic dressings (kaolin or chitosan-based) are carried for exactly this.
- TCCC phases: care under fire (return fire, move casualty, tourniquet only), tactical field care (structured assessment under relative safety), tactical evacuation care (monitoring, reassessment en route).
- Echelon ladder: Role 1 self and buddy aid; Role 2 forward surgical team — damage control surgery, blood, limited holding; Role 3 combat support hospital — specialists, ICU; Role 4 definitive reconstructive care abroad.
- Blast injury quartet: primary blast injury from the pressure wave (tympanic membrane rupture, blast lung, hollow viscus injury), secondary from fragments, tertiary from body displacement, quaternary from burns, crush and asphyxia.
- Ballistic physics: kinetic energy equals half the mass times velocity squared; high-velocity rounds yaw and create a temporary cavity that devitalises tissue beyond the track, while low-velocity handgun wounds injure mainly what the bullet touches.
- War wound doctrine: no primary closure; wound excision with copious irrigation, relook at 48-72 hours, delayed primary closure at four to six days; antibiotics and tetanus prophylaxis from the start.
- Damage control trilogy: abbreviated surgery for haemorrhage and contamination, physiological resuscitation in ICU, planned relook — the doctrine Roles 2 and 3 exist to execute.
- Golden Hour policy: the 2009 US mandate to evacuate casualties within 60 minutes improved survival; modern practice adds tranexamic acid within three hours and balanced blood product resuscitation.
One casualty through the system
Follow a soldier injured by an improvised explosive device with bilateral traumatic below-knee amputations. Under fire: tourniquets high on both thighs — nothing else precedes them. At tactical field care: MARCH completes — airway patent, chest decompressed if needed, lines and tranexamic acid, hypothermia prevention wrap, analgesia. At Role 2 within the hour: damage control surgery — amputation completion, clamps on bleeding vessels, shunts where needed, washout, temporary abdominal or stump closure if physiology is failing, blood products in balanced ratios; the patient is stabilised overnight in a limited holding bed. At Role 3: formal relook, definitive vascular repair or ligation decisions, fracture external fixation, intensive care. At Role 4, days later: reconstructive surgery and rehabilitation begin. Compare a civilian stab wound — one theatre, one operation — and the echelon logic explains itself: each level does only what the next level cannot do quickly enough.
Where students slip
The predictable error is answering ATLS sequence when the stem is tactical: in military MCQs, haemorrhage control precedes airway, and "care under fire" allows little more than a tourniquet. The second is underestimating the exit wound — with high-velocity rounds, tissue damage extends well beyond the visible track because of cavitation, so minimal debridement is a civilian courtesy that fails in war surgery. Third, students forget that war wounds are never primarily closed and that delayed primary closure lands at four to six days. Fourth, echelon numbers get shuffled — memorise Role 1 medic, Role 2 forward surgical team, Role 3 hospital, Role 4 home-nation care. Finally, the blast injury quartet is a standing one-mark question; primary blast injury strikes gas-filled organs.
Frequently asked questions
What is the first priority under fire in Tactical Combat Casualty Care?
Control of massive external haemorrhage with a tourniquet, before airway management. Battlefield data show haemorrhage is the leading preventable death.
What does MARCH stand for?
Massive haemorrhage, Airway, Respiration, Circulation, Head injury and Hypothermia. It reorders civilian ABC for the combat environment.
What can a Role 2 facility do?
Damage control surgery, resuscitation with blood products, and short-term holding — delivered by a forward surgical team. Definitive surgery waits for Role 3.
Why are war wounds not closed primarily?
Because explosive and high-velocity wounds are heavily contaminated with devitalised tissue, and closed wounds infect and break down. Delayed primary closure is performed at four to six days.
Name the four blast injury mechanisms.
Primary pressure-wave injury (blast lung, tympanic rupture, bowel), secondary fragment injury, tertiary displacement injury, and quaternary burns, crush and asphyxia. Each maps to different management.