The Great War Archive

On The Great War archive I read about he U-1 and it was the first undersea submarine made by the Imperial Germans. I choose this because I like the sea attacks and the war on water. This title was interesting because the first submarine made was only used for training and they used other submarines to launch an attack. The Germans did secret attacks on sea that made other opponents upset because of the surprise and the damage it did.  http://www.oucs.ox.ac.uk/ww1lit/gwa