I'm sure that you're right. One of the first actions by Britain at the start of WWI was to cut Germany's undersea telegraph cables. (Except for one which was u

I'm sure that you're right. One of the first actions by Britain at the start of WWI was to cut Germany's undersea telegraph cables. (Except for one which was under Britain's control. Germany ill-advisedly continued to send messages using this cable, confident in their encryption techniques. This led to the interception of the Zimmerman telegram which contributed to the United States' entry into the war.)