This regulation prescribes policies, responsibilities, and planning guidance for realistic consideration of climatic conditions in the research, development, test, and evaluation of material used in combat by the Army. The principal classes of materiel used in combat are:
a. Mechanical assemblies for ground use (e.g., tank).
b. Mechanical assemblies for air use (e.g., helicopter).
c. Electrical and electronic equipment (e.g., radio).
d. Optical equipment (e.g., rangefinder).
e. Weapons (e.g., missile).
f. Ammunition (e.g., artillery shell).
g. Hydrocarbon fuels and lubricants.
h. Construction materials and equipment.
