Over one thousand military garrison occupying a line from the North Sea to the River Orne and the cycle time of four months, unless it is under attack, as the battle is over 9,600 kilometers long trenches.
The soldiers over one thousand battalion occupied an area of along the line from the North Sea to the river Orne and use ระบบหมุนเวียน four step for one month only while the attack.The battle in the trenches is longer than the 9.600 kilometers.