For those interested in historical records and first-hand accounts on paper:
In a more literal sense, if you were referring to a common phrase in the fountain pen hobby, enthusiasts often discuss Behind Enemy Lines - Bad Paper! —which focuses on how certain inks perform on low-quality, "common" paper like standard copy or notebook paper.
: The article Brothers across Enemy Lines documents the letters between a mission president and a German soldier during World War I.
: Data from Behind Enemy Lines: How Russia May have Used Twitter to Seize Crimea discusses how modern social media data is used as a new frontier for military planning and "information warfare".
Blocked Drains Reading