The M.A.R.C.H. Protocol: Why TimberRaven Builds Backcountry Medical Training Around This Battlefield-Proven Framework

When something goes wrong in the backcountry—a chainsaw slip, an ATV rollover, a fall from a ridgeline, or a hunting accident miles from the nearest road—the first few minutes determine the outcome. Help isn't ten minutes away. It might be ten hours away. In that window, you are the medic. The decisions you make, and the order you make them in, are the difference between a casualty who survives long enough to reach definitive care and one who doesn't.

That's why every TimberRaven wilderness medical clinic is built around a single, battle-tested framework: the M.A.R.C.H. protocol. It isn't theory. It isn't a checklist someone invented in a classroom. It's the result of two decades of hard-won lessons from combat medics, special operations forces, and tactical EMS providers who learned—often the hard way—what actually kills people in the field, and in what order to address those threats.

What Is the M.A.R.C.H. Protocol?

M.A.R.C.H. is a structured, priority-based trauma care algorithm developed within Tactical Combat Casualty Care (TCCC) and adapted for civilian high-threat environments through Tactical Emergency Casualty Care (TECC). The acronym stands for:

• M – Massive Hemorrhage
• A – Airway
• R – Respiration
• C – Circulation
• H – Hypothermia / Head Injury

Each letter represents a category of life threat, addressed in order of how quickly it can kill. It replaces the traditional ABCs (Airway, Breathing, Circulation) taught in conventional first aid—not because the ABCs are wrong, but because they were designed for a different problem set: medical emergencies in environments where bleeding control is rarely the deciding factor.

In trauma, especially traumatic injuries common to off-road, hunting, logging, and backcountry recreation, uncontrolled hemorrhage is the number one cause of preventable death. A patient can bleed out from a femoral artery laceration in under three minutes. You don't have time to start with airway. You start where the threat is greatest.

Why M.A.R.C.H. Replaced the Traditional ABCs

The military discovered something uncomfortable during the wars in Iraq and Afghanistan: medics following the classic ABC sequence were losing patients to bleeding while they worked on airways. Studies of preventable battlefield deaths consistently identified three categories that killed casualties before they could reach surgical care:

1. Extremity hemorrhage (roughly 60% of preventable deaths)
2. Tension pneumothorax (about 33%)
3. Airway obstruction (about 6%)

That data fundamentally reshaped trauma care. If massive hemorrhage is killing the majority of preventable deaths, it has to be addressed first—before anything else. M.A.R.C.H. rearranges the priorities to match reality.

The civilian backcountry environment isn't a battlefield, but the injury patterns are surprisingly similar. A logger struck by a falling limb, a side-by-side rollover, a tree-stand fall, an avalanche burial, a knife slip while field-dressing game—these produce the same physiological problems as combat trauma: massive bleeding, compromised airways, chest injuries, shock, and environmental exposure. The protocol travels well.

Breaking Down M.A.R.C.H. for the Backcountry

M – Massive Hemorrhage

Stop the bleeding. Right now. Before anything else.

If a patient has bright red, pulsatile bleeding or a rapidly expanding pool of blood, you have minutes—sometimes seconds—to intervene. The interventions, in order of escalation:

• Direct pressure with a gloved hand or trauma dressing.
• Tourniquet application for life-threatening extremity hemorrhage. A CAT or SOFTT-W tourniquet, applied high and tight on the limb, can stop arterial bleeding in seconds.
• Wound packing with hemostatic gauze (such as Combat Gauze) for junctional injuries—groin, axilla, neck—where a tourniquet won't work.
• Pressure dressings to maintain hemorrhage control once initial bleeding is stopped.

At TimberRaven, we drill tourniquet application until students can apply one one-handed, in the dark, on themselves, in under 30 seconds. Because that's the standard the situation will demand.

A – Airway

Once major bleeding is controlled, you address the airway. An unconscious patient on their back can suffocate on their own tongue, blood, or vomit within minutes. The good news: most airway problems in the field are solved with simple positioning.

• Recovery position (lateral recumbent) for unconscious patients who are breathing.
• Chin lift or jaw thrust to open the airway, especially when spinal injury is suspected.
• Nasopharyngeal airway (NPA) insertion—a simple, well-tolerated adjunct that keeps the airway patent in unconscious patients.
• Suction or finger sweep to clear obstructions when necessary.

The goal isn't a perfect, hospital-grade airway. The goal is keeping air moving until the patient gets to definitive care.

R – Respiration

Now you assess how the patient is breathing. This is where you find and treat chest injuries that can kill in minutes:

• Tension pneumothorax – air trapped in the chest cavity collapsing the lung and compressing the heart. Treated with needle decompression by trained providers.
• Open ("sucking") chest wounds – treated with a vented chest seal applied to the wound during exhalation.
• Flail chest – multiple rib fractures causing paradoxical chest movement. Stabilize and monitor.

You expose the chest, look, listen, and feel. In the backcountry, with cold patients and bulky clothing, this step gets skipped far too often. We teach students to commit to it every time. A penetrating chest wound under three layers of Carhartt is still a penetrating chest wound.

C – Circulation

With bleeding controlled, airway open, and breathing managed, you turn to circulation: assessing for shock and supporting perfusion.

• Reassess all hemorrhage control measures—tourniquets and dressings can fail or loosen.
• Check pulse quality, skin color, capillary refill, and mental status.
• Position the patient appropriately (supine, legs elevated if no spinal or chest injury).
• If trained and equipped, initiate IV or IO fluid resuscitation per protocol.

In a wilderness setting, recognizing the early signs of shock—agitation, pale clammy skin, rapid weak pulse, altered mental status—and getting the patient moving toward evacuation is often more valuable than any single intervention.

H – Hypothermia / Head Injury

The final letter is the one most often neglected, and it's the one that quietly kills patients who survived everything else.

Hypothermia is a force multiplier in trauma. A cold patient can't clot. Bleeding that you stopped can restart. Cardiac arrhythmias become more likely. The "trauma triad of death"—hypothermia, acidosis, and coagulopathy—begins with cold. Even on a 70-degree summer day, a trauma patient lying on the ground losing blood will become hypothermic faster than you'd believe.

Field interventions:

• Get the patient off the ground. Insulation underneath matters more than insulation on top.
• Remove wet clothing and replace with dry layers.
• Use a commercial hypothermia prevention kit (HPMK), Mylar blanket, or improvised wrap.
• Cover the head—major heat loss occurs through an exposed scalp.

Head injury assessment also lives in this final step. Monitor mental status using AVPU (Alert, Verbal, Pain, Unresponsive) or GCS. Watch for deteriorating consciousness, unequal pupils, vomiting, or seizures. In the backcountry, a deteriorating head-injured patient is a hard evacuation problem—recognize it early and start moving.

Why TimberRaven Builds Our Curriculum Around M.A.R.C.H.

We've considered every major wilderness and tactical medical framework, and we keep coming back to M.A.R.C.H. for specific, deliberate reasons.

1. It's Built for the Real Killers

Backcountry trauma doesn't look like a heart attack at the grocery store. It looks like arterial bleeding from a chainsaw cut, a crushed chest from a UTV rollover, a closed head injury from a horse fall. M.A.R.C.H. is sequenced to address those threats in the order they kill. That's not a marketing decision—it's a mathematics decision. The protocol matches the data.

2. It Works Under Stress

Fine motor skills disappear when adrenaline hits. Complex decision trees collapse. Memory becomes fragmented. M.A.R.C.H. is five letters. Your students can recite it under load, in the cold, with hands shaking. That simplicity isn't a limitation—it's the entire point. A protocol you can't execute under stress isn't a protocol; it's a wish.

3. It Scales to Skill Level

A novice with a tourniquet and a chest seal can execute meaningful M.A.R.C.H. care. An advanced provider with airway adjuncts, decompression needles, and IV access can execute sophisticated M.A.R.C.H. care. The framework doesn't change—only the depth of intervention at each step. That makes it ideal for teaching mixed audiences: hunters, overlanders, search-and-rescue volunteers, and first responders working alongside each other.

4. It Bridges Civilian and Tactical Worlds

Many of our students are first responders, military veterans, or law enforcement. They've already trained in TCCC or TECC. By using the same framework, we reinforce existing skills rather than asking them to learn a parallel system. For civilian students, M.A.R.C.H. introduces them to a v