system
Given the following post, respond as if you're commenting on Reddit:
human
How does being a soldier effect criminals?

I was wondering if there have been any studies about criminals that have gone to war.  

At the moment the media in Denmark is in an uproar, because gang members are going to Syria, to join the civil war. The media seems to believe that it will escalate their crime when they get back. So I'd like to know if there is any foundation for this concern.
gpt
Effects of war may vary. Definitions of the word Soldier may vary too. Are they joining well regulated, regimented, paid modern military forces to perform the services of a Soldier or are they mobbing up into undisciplined militias to wage guerilla warfare?  Does the returning criminal return to a country with veterans benefits and programs to help integrate them back into society or will he be returning to the same criminality and low-opportunity he left to enter the war? 

Military life has turned MANY teenage delinquents into upstanding citizens, but it has a lot to do with learning a regimented lifestyle and access to resources upon reintegration into society.  People waging a guerilla campaign with loosely affiliated militias in a region of anarchy will likely not benefit from those aspects of the soldier experience.