: 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".
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.
Depending on whether you are looking for academic analysis, historical accounts, or stationery advice, several "papers" and resources are related to "Enemy Lines." Enemy Lines
If you are looking for an academic paper or scholarly critique, several articles analyze the cultural and political impact of the film Behind Enemy Lines (2001) and real-world intelligence operations:
For those interested in historical records and first-hand accounts on paper: : Data from Behind Enemy Lines: How Russia
: Detailed summaries of the real-life events that inspired the film Behind Enemy Lines , such as the experience of pilot Scott O'Grady, provide a factual "on paper" comparison to the cinematic version. Fountain Pen Community ("Bad Paper")
: The paper Behind Enemy Lines and American Geopolitical Culture examines the 2001 film as a product of post-9/11 American militarism and its portrayal of the Bosnian war. Depending on whether you are looking for academic
: Reporting from Behind Enemy Lines explores how independent journalists report from conflict zones at great personal risk. Historical Documentation and Essays