When the means of modern communications were developed, there was no way to STOP the flow of information, other than jamming some airwaves, etc.!
Think what is being described.
You can freely e-mail anyone, and the troops anywhere in the world, and they back to you.
You take much for granted that was not part of our growing up world.
We had only radio and news films of the war shown in movie theaters - newspapers and magazines and books.
Hey - I was in the very first televised National Sprelling Bee in 1947, representing Florida, but not many in America had television sets to see it!
We've come a long way - - -