This link refers to a thesis written by Charles Jerome Schoch detailing the Wikileaks release of the “Afghanistan War Diaries”. It gives a brief history of defense-related secrecy, the role of the Mainstream Media and it’s failings to bring this information to light.
It’s a long read but well worth the time.
https://www.wikileaks-forum.com/index.php?topic=7422.msg26590#msg26590