The trenches crisscrossing Western Europe during World War I were not a new invention. Trench warfare was already in heavy use during the American Civil War, half a century before. World War I, however, brought the trench to maturity. When the deep hardened trench works combined with machine guns and increasingly efficient and deadly artillery, the only real fighting became devastating rushes and attacks by waves of Soldiers who either ended up slaughtered or only in possession of a few more yards of territory. Trench warfare was not in the original plans of the military powers prior to hostilities in 1914. Instead, the generals planned on a short, decisive war that would "be over by Christmas." The generals were sorely mistaken; Soldiers on the front lines during the first years of fighting found themselves facing machine guns and artillery that made offensive maneuver practically impossible. The tactical answer to these weapons was to use farm ditches and shell craters to take hasty positions of safety against the onslaught of lead and steel. Time and brutal fighting transformed the field-expedient positions into refined trench systems. Soon both sides had trenches running parallel to each other.
The induction centers themselves represented a significant accomplishment of planning and engineering. The Army used empty land in strategic locations all over the country to erect, in some cases in only a few short weeks, training facilities built of plywood, tar paper, and clap boards. Mess halls, vehicle garages, and barracks sprang up from nowhere, ready to accept the recruits and turn them into Soldiers. The rudimentary buildings, built in a "modular" design, could be used for any purpose from sleeping quarters to training rooms. In addition, the simple constructions broke down easily and shipped anywhere, even to the United Kingdom or islands in the Pacific.
By the time the Americans entered the war, the trenches had been in use for years. The major features of the trenches were based around minimizing casualties from artillery bombardment and enemy raids. The trenches were built in a zig-zag pattern to keep raiding enemies from firing down the full length of the fortification. In the most developed trenches, dugouts for sleeping and protection from artillery, concrete reinforcement, and blind alleys for confusing penetrating enemies were common. The floors of the trenches were either mud and muck or, for the lucky Soldiers, made of wooden planks called "duckboards."
The trenches were, of course, for defense. Sections of trench line had machine gun emplacements set to cover any advances by the enemy, while other areas had specially camouflaged positions for snipers to hide in, taking aim at any Soldier who might stick his head up at the wrong time. Mortar pits, aid stations, and simple firing positions for riflemen dotted the front line, ready for the next fight. Connecting all of these positions to the command and control elements in the rear was another set of trenches in which Soldiers could move back and forth from the front lines in relative safety. Even behind the front, all movement outside the trench was dangerous due to the great range of enemy artillery.
Riflemen and machine gun crews faced the enemy trenches over a desolation known as "No-Man's Land." Each side placed increasingly complicated networks of barbed wire in front of their trench lines to slow down and stop advancing troops. In addition, batteries of artillery were registered specifically to pound No-Man's Land with massive barrages of shells should any attack be launched. Finally, the machine gun positions were ready to mow down any troops who made it past the artillery and barbed wire. The awful result of many failed attempts on this trifecta of murderous defense was the constant stench of dead and rotting enemy corpses floating into the trenches from No-Man's Land.
The trench fortifications in Western Europe were by far the most visible geographical feature of the war. They were built in the first place because of the weapons systems developed before and during the war. The advent of machine guns, used in the tactical manner of the day, precipitated their primary position as a defensive weapon. Their extreme rate of fire and general mechanical reliability made them the primary force to be dealt with during any engagement, and were nearly impossible to attack against in an open field of battle. Artillery, the king of battle since the invention of gunpowder, also reached new levels of effectiveness.
Artillerymen had made an art out of the mathematics and engineering required to fire effective and deadly strikes against enemies, forcing the other side to dig in. It was common for batteries of artillery to fire millions of shells over the course of days at the enemy trenches to "soften the defenses" in preparation for an attack. The shells served to destroy the targeted trenches, force the enemy Soldiers into their dugouts and shelters, and cut the tangles of wire in front of their defenses. Machine guns and artillery were combined with poison gas attacks, sniper posts, and countless other horrors to make the Soldier's experience in the trenches utterly miserable.
The Americans entered the trench environment in 1917 with very little understanding of what awaited them. The Doughboys arrived in the front line trenches with French arms and untried commanders, but quickly became a premier fighting force. The addition of the American troops broke the stalemate and pushed the Germans back into Germany, forcing them into the armistice that ended the devastation of the First World War. Information about the American experience in World War I is available in countless biographies, autobiographies, and researched books available at any public library. The collections at the U.S. Army Heritage and Education Center feature the World War I veterans surveys and the unpublished memoirs and papers of many of our brave Soldiers who fought, and died, in the Great War.