The Great War Assignment

Instructions:

Carefully read the following question, and submit your answer based on your readings and understanding of the subject.  Your answer should be at least a paragraph in length. Please proofread your submission--points will be deducted for sloppy work. 

List five major developments in military technology first used on a large scale in World War I.  How did they affect the conduct of the war as reflected in organization, strategy and casualties?