Response to the following in 75 to 100 words :
1. World War I brought the first large scale use of submarine warfare in conflict. What were the effects of this new type of warfare? Explain the meaning of "unrestricted" submarine warfare. What were the implications of sinking supply and troop ships at sea? How did this development influence future wars?
2. Explain what "infiltration tactics" were in the context of World War I. Who initiated the use of these infiltration tactics and what was the end result of their development? Explain how armies prepared for the use of infiltration tactics and evaluate their impact on the conduct of World War I.