Modernization Of Warfare
GUNS N' STUFF
U-Boats
German submarines used in WWI.
Mustard Gas
First time chemical warfare was ever used.
Trench Warfare
The trenches became the battle ground of World War One and they became the final resting place for millions of young men.
Conyoy System
A group of merchant vessels sailing together, with or without naval escort, for mutual security and protection.
Big Bertha
Big Bertha was the howitzer used by German forces advancing through Belgium in 1914.
American Expeditionary Force
World War I was the first time in American history that the United States sent soldiers to defend foreign soil.
http://www.youtube.com/watch?v=8Pgd4pe2-Ds&edufilter=0NsmCsBD3UGorqyU6yfFOg