TM 10-8415-209-10 TM 8415-10/2 1-7.  DIFFERENCES BETWEEN MODELS. Suit, Chemical Protective  ........ CPOG, green* Class 1  ........................... BDO, woodland camouflage Class 2 ............................ BDO, 6 color desert camouflage** Class 3  ........................... BDO, 3 color desert camouflage Coat and Trousers, Chemical Protective, Aircrew, Flame Resistant Class 2  ........................... Tan Class 3  ........................... Woodland camouflage Suit, Chemical and Biological Protective, Carbon Sphere Class 1  ........................... Woodland camouflage Class 2  ........................... Desert camouflage *CPOG will be in service until supplies are exhausted. **Class 2 is being replaced by Class 3. 1-10