U.S. Marines assigned to the 2nd Fleet Antiterrorism Security Team Company
Battledress is a general term for the militaryuniform worn into combat, as opposed to 'display' dress and formal uniforms worn at parades and functions. It may be either monochrome (often a shade of green or brown) or in military camouflage colours.
References
Blechman, Hardy; Newman, Alex (2004). DPM: Disruptive Pattern Material. Frances Lincoln Limited.
Behrens, Roy R. (2002). FALSE COLORS: Art, Design and Modern Camouflage. Bobolink Books. ISBN978-0-9713244-0-4.
Khaki: Uniforms of the CEF by Clive M. Law (Service Publications, 1998).
Clive M. (Clive Michael) Law; Dorosh, Michael A (2001). Dressed to Kill. ISBN978-1-894581-07-3.
Other websites
www.canadiansoldiers.com: extensive discussion of Canadian Army uniforms, insignia, and traditions from 1900 to 2000