Surprisingly complex system with three main types of trench.
- Front line trench - 2.5m deep and 1m wide with soldiers spending approx 1 week in the front line. Soldiers were liable to being hit by enemy fire and sometimes their own artillery.
- Support trench - Provided a second line of defence in case the front line trench was taken by the enemy. They also had first aid stations and kitchens to ensure front line men had medical treatment and hot food. Positioned a few hundred metres behind the frontline and were therefore safer.
- Communication Trench - Used to move between the front and rear trenches. Also used to transport injured men to field hospitals.
- Carbon monoxide poisoning (oxygen starvation) where candles would be used to measure oxygen levels. If the candle went out, it was time to leave!
- Tunnel collapse (or explosion of mines already set leading to this).
- Meeting enemy tunnellers who would have to be fought in hand to hand combat, blow you up or bury you alive.
- Dangers led to development of the geophone - a pair of disc shaped microphones connected to earpieces so that enemy tunnellers could be spotted, before the British themselves were.
Two medical innovations which helped to reduce effects of injury...
- Brodie Helmet was introduced as standard kit in 1915 and reduced head injuries by 75%
- Thomas Split significantly reduced the death rate from a broken femur because it stabilised injury and controlled infection - following its introduction in 1916, the chance of death from this injury declined from 80%-20%. Was invented by Hugh Owen Thomas.
- Shell Shock (also known as war neurosis) is understood today as PTSD.
- Symptoms include hysteria and anxiety, paralysis, limping and muscle contractions, blindness and deafness, nightmares etc.
- By 1916, over 40% of casualties in fighting zones were victims of the condition and 80,000 cases passed through the British Army medical facilities during war.
- Little sympathy at the time and it was thought to be a sign of emotional weakness and cowardice
- Treatment was harsh and often included solitary confinement, electric shocks, physical reeducation or emotional deprivation.
- Lucky ones received massage/rest/dietary treatments/sent home.
1 - Stretcher Bearers had most hazardous task of war removing dead and injured from no man's land, often under artillery or gas fire. Carried medical basics.
2 - RAP was as basic as a dugout where basic first aid could be administered to either patch a soldier up, or send him on to the next stage.
3 - Field Ambulance were half a mine from the front line. They were a tented area with two dressing stations - an advanced dressing station and a main dressing station. Still only limited treatment.
4- CCS was 12 miles approx from the front line and had most things needed for the very sick e.g. operating theatres, medical and surgical wards. Approx 50 beds and 150 stretchers.
5 - General/Stationary Hospital - Usually civilian hospitals or large buildings near railways. Quality varied considerably - could be a decayed convent, or a specialist centre for gas poisoning.
7 - Ships - converted passenger liners taking patients across the Channel for final leg
8 - British Hospitals - most serious cases which attracted the best and most pioneering practitioners. Would deal with head and chest trauma, or those needed maxillofacial (mouth, jaw, face and neck surgery).
- Human Stretcher Bearers - carried few medical supplies for short distances, but could get through quagmires.
- Horse-drawn ambulances - relatively cheap and reliable and could carry people for longer than a stretcher bearer, but had the potential to get stuck in the mud and were slower than a mechanised ambulances.
- Mechanised ambulances - fastest mode (Ford Model T had a top speed of 45mph) and could carry more supplies over a longer distance.
- In 1900 Karl Landsteiner identified blood groups, - In 1907 Ludvig Hektoen notes benefits of matching blood groups for compatibility
- In 1914 Richard Lewisohn shows sodium citrate to be an effective anticoagulant
- Blood successfully transfused during WW1 because it was kept on ice for up to 28 days before being transferred to CCS.
- Blood stockpiled before casualties arrived and Captain Oswald Robertson established the first blood bank on the Western Front in 1917 for the Battle of Cambrai.
- Sodium Citrate was used to stop the blood from clotting
- Stocked exclusively with blood group O (universal donor) and allied medical forces were given transfusion kits.
- Pre war: prosthetics are heavy and poor replacements for lost limbs
- During war: Two American firms, Rowley and Hanger were invited by the government to open Queen Mary's Hospital where new prosthetics were developed and trialled on patients. Features included being lightweight, rustproof and with adjustable joints
- Opening of hospital in Brighton for limbless soldiers - amputees would undergo 'educative convalescence' and learn how to overcome their injuries from children who were missing limbs.