Rowan Brown is an individual who helped Mads Schulz build Erewhon.
Rowan's military background is based on is serving in the US Army 10th Mountain Divison in Afghanistan (2002/2003). Also, his probably a former member of the 22nd SAS (22nd Special Air Service Regiment) for his picture in the Objectives Board - Special Operations with the Royal Army uniform with the 22nd SAS beret and pin.