No Man's Land
Tanks, aeroplanes, zeppelins, flamethrowers, grenades, trench mortars. Wouldn't 100% rely on this information though so it would be best to check another source before making a definite answer.
The Trench warfare was a common tactics during and before world war 1. It gave soldiers a very good cover from bullets, artillery, mortars. It was also cheap and simple
The Trench Mortars effected the World War 1 (WW1) by giving an advantage to the users by being able to keep cover and still be able to shoot over and hit or at least hit the ground near the enemy's trenches to force then to move.
The development and the introduction of the tankupon the battlefield .
Trench Warfare.
No, trench foot was first noted by Napoleon's army in 1812. It was made more well known during the trench warfares of World War I, but it was not new at that time.
Yes. Mortars are used by vitrually every army in the world.
Trench Warfare
yes in fact mortars were one of the most used and manufactured weapons in world war 2
Trench warfare.
Trench warfare