The trenches on the western front were built in a more or less continuous line from the North Sea all the way to the border of Switzerland. A distance of about 750 km; considering that both sides used multiple trench lines, plush support trenches, and zigzags across the landscape there would have been several thousand kilometres of trenches being used by either side at any given time.
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The trenches in WW1 were not individual. Each side had many miles of trenches and under-ground rooms and offices all linked together in a large network shared by tens of thousands of personnel.
The trenches were infamously overrun with rats - some were killed and cooked to supplement poor rations.
The Romans built around 250,000 miles of roads in total.
They were around 7ft deep and they went on for 475 miles! (600km) Actually the German trenches were a lot better and they were fortified with concrete bunkers and had deep dugouts as the Germans were trying to keep hold of land they had already gained. They had also got first pick of the ground so their trenches were on the higher, dryer ground. Allied trenches were not even allowed to be comfortable as Senior officers said they would not be staying long so there was no need to make them comfortable and they were built in less defensive positions on the low,muddy ground without any bunkers. In fact some of the latrines (toilets) were built towards no mans land on the Allied forces because generals were complaining at men taking too long to relieve themselves. Imagine the pressure.
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Many things made it possible to fire from the trenches. Mortars and field artillery were often fired from trenches. Trenches usually had berms (low dirt walls) built in front of them with firing positions along the top of the berm. Trenches sometimes had benches or ladders for gunners and snipers.
Trench warfare was Intorduced in world war 1. By world war 2, really the end of ww1 on. they were outdated due to the use of tanks and their ability to roll over the barbed wire and trenches.
Over 200,000 men died in the trenches of World War 1.
thousands
The trenches in WW1 were not individual. Each side had many miles of trenches and under-ground rooms and offices all linked together in a large network shared by tens of thousands of personnel.
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Trenches
About 200,000
53,000
Many of the casualties of World War I were due to the use of gas warfare in the trenches.
Yes, there are deep oceanic trenches that stretch for miles off the coasts of many continents. Examples include the Peru-Chile Trench off South America, the Mariana Trench off Asia, and the Tonga Trench off Oceania. These trenches are formed by tectonic plate movements and are the deepest parts of the ocean.