Why trenches were used in world war i electricity kwh calculator

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Although the specific construction of a trench was determined by the local terrain, most were built according to the same basic design. The front wall of the trench, known as the parapet, averaged ten feet high. Lined with sandbags from top to bottom, the parapet also featured two to three feet of sandbags stacked above ground level. These provided protection, but also obscured a soldier’s view.

A ledge, known as the fire-step, was built into the lower part of the ditch and allowed a soldier to step up and see over the top (usually through a peep hole between sandbags) when he was ready to fire his weapon. Periscopes and mirrors were also used to see above the sandbags.

The rear wall of the trench, known as the parados, was lined with sandbags as well, protecting against a rear assault. Because constant shelling and frequent rainfall could cause the trench walls to collapse, the walls were reinforced with sandbags, logs, and branches. Trench Lines

A typical trench system included a line of three or four trenches: the front line (also called the outpost or the fire line), the support trench, and the reserve trench, all built parallel to one another and anywhere from 100 to 400 yards apart.

The main trench lines were connected by communicating trenches, allowing for the movement of messages, supplies, and soldiers. Protected by fields of dense barbed wire, the fire line was located at varying distances from the Germans’ front line, usually between 50 and 300 yards. The area between the two opposing armies’ front lines was known as "no man’s land."

Some trenches contained dugouts below the level of the trench floor, often as deep as twenty or thirty feet. Most of these underground rooms were little more than crude cellars, but some, especially those farther back from the front, offered more conveniences, such as beds, furniture, and stoves.

Soldiers were regularly rotated through a basic sequence: fighting in the front line, followed by a period of time in the reserve or support line, then later, a brief rest period. (Those in reserve might be called upon to help the front line if needed.) Once the cycle was completed, it would begin anew. Among the men in the front line, sentry duty was assigned in rotations of two to three hours.

Each morning and evening, just before dawn and dusk, the troops participated in a " stand-to," during which men (on both sides) climbed up on the fire-step with rifle and bayonet at the ready. The stand-to served as preparation for a possible attack from the enemy at a time of day – dawn or dusk – when most of these attacks were likeliest to occur.

Maintaining the trenches required constant work: repair of shell-damaged walls, removal of standing water, the creation of new latrines, and the movement of supplies, among other vital jobs. Those spared from performing daily maintenance duties included specialists, such as stretcher-bearers, snipers, and machine-gunners.

Heavy rainfall flooded trenches and created impassable, muddy conditions. The mud not only made it difficult to get from one place to another; it also had other, more dire consequences. Many times, soldiers became trapped in the thick, deep mud; unable to extricate themselves, they often drowned.

The pervading precipitation created other difficulties. Trench walls collapsed, rifles jammed, and soldiers fell victim to the much-dreaded "trench foot." A condition similar to frostbite, trench foot developed as a result of men being forced to stand in water for several hours, even days, without a chance to remove wet boots and socks. In extreme cases, gangrene would develop and a soldier’s toes, or even his entire foot, would have to be amputated.

Unfortunately, heavy rains were not sufficient to wash away the filth and foul odor of human waste and decaying corpses. Not only did these unsanitary conditions contribute to the spread of disease, they also attracted an enemy despised by both sides – the lowly rat.

Multitudes of rats shared the trenches with soldiers and, even more horrifying, they fed upon the remains of the dead. Soldiers shot them out of disgust and frustration, but the rats continued to multiply and thrived for the duration of the war.

As terrible as the sights and smells were for the men to endure, the deafening noises that surrounded them during heavy shelling were terrifying. In the midst of a heavy barrage, dozens of shells per minute might land in the trench, causing ear-splitting (and deadly) explosions. Few men could remain calm under such circumstances; many suffered emotional breakdowns. Night Patrols and Raids

Patrols and raids took place at night, under cover of darkness. For patrols, small groups of men crawled out of the trenches and inched their way into no man’s land. Moving forward on elbows and knees toward the German trenches and cutting their way through the dense barbed wire on their way.

Members of the raiding parties armed themselves with rifles, knives, and hand grenades. Smaller teams of men took on portions of the enemy trench, tossing grenades in, and then killing any survivors with a rifle or bayonet. They also examined the bodies of dead German soldiers, searching for documents and evidence of name and rank.

Snipers, in addition to firing from the trenches, also operated from no man’s land. They crept out at dawn, heavily camouflaged, to find cover before daylight. Adopting a trick from the Germans, British snipers hid inside of "O.P" trees (observation posts). These dummy trees, constructed by army engineers, provided protection for the snipers, allowing them to fire at unsuspecting enemy soldiers.

Despite these different strategies, the nature of trench warfare made it almost impossible for either army to overtake the other. Attacking infantry was slowed down by the barbed wire and bombed-out terrain of no man’s land, making the element of surprise very unlikely. Later in the war, the Allies did succeed in breaking through German lines using the newly-invented tank. Poison Gas Attacks

In April 1915, the Germans unleashed an especially sinister new weapon at Ypres in northwestern Belgium – poison gas. Hundreds of French soldiers, overcome by deadly chlorine gas, fell to the ground, choking, convulsing, and gasping for air. Victims died a slow, horrible death as their lungs filled with fluid.

By 1917, the box respirator became standard issue, but that did not keep either side from the continued use of chlorine gas and the equally-deadly mustard gas. The latter caused an even more prolonged death, taking up to five weeks to kill its victims.

Early in the war, the term referred to what was believed to be the result of an actual physical injury to the nervous system, brought about by exposure to constant shelling. Symptoms ranged from physical abnormalities (tics and tremors, impaired vision and hearing, and paralysis) to emotional manifestations (panic, anxiety, insomnia, and a near-catatonic state).

When shell shock was later determined to be a psychological response to emotional trauma, men received little sympathy and were often accused of cowardice. Some shell-shocked soldiers who had fled their posts were even labeled deserters and were summarily shot by a firing squad.

Due in part to the Allies’ use of tanks in the last year of the war, the stalemate was finally broken. By the time the armistice was signed on November 11, 1918, an estimated 8.5 million men (on all fronts) had lost their lives in the "war to end all wars." Yet, many survivors who returned home would never be the same again, whether their wounds were physical or emotional.