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At the front there was the front line, then there was the support trench and at the back was a reserve trench.
communication trench links the front line and first support line trench supports trench.
The front wall, the side facing the enemy, is called a parapet.The rear wall is called a parados.
the front wall was called a parapet the back wall was a parados
Short trenches called saps were dug from the front-trench into No-Man's Land. The sap-head, usually about 30 yards forward of the front-line, were then used as listening posts
this site is rubbish
At the front there was the front line, then there was the support trench and at the back was a reserve trench.
communication trench links the front line and first support line trench supports trench.
communication trench links the front line and first support line trench supports trench.
Front line trench Support trench reserve trench
Between 70 and 100 yards (64-91 m) behind the front trench was located the support (or "travel") trench, to which the garrison would retreat when the front trench was bombarded. Between 300 and 500 yards (275-460 m) further to the rear was located the third reserve trench, where the reserve troops could amass for a counter-attack if the front trenches were captured.
As a defensive measure, in case the front trench was overrun.
The front wall, the side facing the enemy, is called a parapet.The rear wall is called a parados.
the front wall was called a parapet the back wall was a parados
Short trenches called saps were dug from the front-trench into No-Man's Land. The sap-head, usually about 30 yards forward of the front-line, were then used as listening posts
There were differences in the function and importance of trenches. The first one (closest to the enemy) was also called the Front Line or the Fire Line. A 100 yards behind it you had the support trench and again some 100 yards behind, the reserve trench. And then you had the connecting trenches, who were just there so you could get from one trench to the other. There wasn't a real 'hierarchy' anmong trenches: the front line was most important for fighting, but the other two were important for their support facilities, radio and command rooms and as places for soldiers to rest from front line duties.
In the same trench, they'd probably just yell down the line or walk. If they were in different trenches, they'd send a runner, someone with a track or some sort of running background to pretty much dodge bullets to get the message to the other trench.