1. Robby Patterson

2.  Watercraft  Capable of independent operation below the surface of the water

3.  First war they were widely used  Attacking enemy ships or submarines  Aircraft carrier protection

4.  Self -propelled explosive projectile weapon  Launched above or below the surface the water surface

5.  Were widely used  Used against shipping and submarines  Germany used torpedoes against Britain

7.  http://en.wikipedia.org/wiki/Torpedo#World_ War_I http://en.wikipedia.org/wiki/Torpedo#World_ War_I  http://en.wikipedia.org/wiki/Submarine http://en.wikipedia.org/wiki/Submarine  http://armystrongstories.com/army- stories/andrea-azbells-a-soldiers-farewell/ http://armystrongstories.com/army- stories/andrea-azbells-a-soldiers-farewell/