Per Army Regulation 140-1, Chapter 7 (Marksmanship Training and Competitive Program), section 7-2 a. (11), the Chief, Army Reserve will conduct the World-wide Chief, Army Reserve Postal Matches. Army Reserve Marksman is the official US Army Reserve resource supporting marksmanship force wide and this page describes the OCAR-supported postal match. All Army Reserve units are encouraged to participate.
Conduct of the World-wide Chief, Army Reserve Postal Matches
US Army Reserve Postal Match FY 2013