Trench warfare was commonly used in World War I. The German army began using flamethrowers to flush out enemy soldiers from trenches, as seen at the Battle of Hooge. While effective, flamethrowers' gas tanks were exposed and could be ignited by gunfire or shrapnel. Chemical weapons like gas also killed over 1.3 million soldiers and 90,000 deaths during World War I. The first use of a "box barrage" artillery technique occurred at the Battle of Neuve Chapelle in 1915 to limit enemy movement.

1. One of the most notable tools of war in World War I
was the use of trench warfare.

2. To counter trench warfare, the German army had begun using
their new weapon of war, the flamethrower. It was most notably
used in the battle of Hooge to flush out enemy soldiers. Although
effective, the flamethrower had a major drawback in that its gas
tank was exposed to being fired upon by unfriendly units and stray
shrapnel.

3. During WWI gas was a major chemical weapon that killed hundreds
of thousands of soldiers. Casualties reached over 1.3 million and
deaths tolled near 90,000 due to chemical warfare.

4. The first box barrage was used at Neuve Chapelle in 1915. A
box barrage is when numerous artillery shells are fired to
prevent enemy movement.

5. Works Cited
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2376985/
http://www.compoundchem.com/2014/05/17/chemical-warfare-ww1/