Trench tactics provided an excellent defensive line, however, because of this advantage, a successful ground attack was very difficult to accomplish. This imbalance of attack vs defense caused a stalemate because each army didn't want to risk attacking the enemy trenches as they would most likely be defeated.
Stalemate.
Machine gun
Settled into a bloody stalemate
They used poisoned gasses.
the germans had alien technology
Stalemate.
The entry of the U.S. into the war.
On a Coast Line somewhere
the entry of the U.S. into the war.
They did help break the stalemate.
stalemate
Machine gun
1914
the use of chemical weapons.
the use of chemical weapons.
take it easy
stalemate