To gain political or economic advantages.
If by "solution for trench warfare", you mean a way to end trench warfare, then the invention and widescale use of tanks, bombers and the Blitzkrieg in WWII solved trench warfare.
When the Schlieffen Plan did not work for Germany they switched to Trench Warfare.
the reserve trench were the lin eof trenchs that are behind the front lin trench. if or when the front line trench is captured, the solidiers can use the reserve trench line and the substitute front line
Trench Warfare. :)
Can goods have the same ware.
He paid the cab fare in cash.
To gain political or economic advantages.
You will either pay the fare to ride in the cab, or you will have to walk.
When you come to this trench, swim through it, not over it.
Fare is misshapen with his back
The soldiers dug a trench to provide cover from enemy fire during the battle.
The Mariana Trench is the deepest in the world.
As my submarine descended into the ocean trench, we passed by a slab of rock.
The Marianna Trench is great example of subduction.
Farewell
The artillery subjected the enemy trench-line with cannonade .