On flat ground, accommodation is dug down. It is advantageous to have protective overhead cover, but if this is not possible, the roof and surfaces such as tent flies, waterproof paper, and similar materials should be covered with natural blending camouflage and maintained. In defensive positions, trenches should have overhead protective cover at ground level and should be covered completely with natural camouflage. Slit trenches should be covered with camouflage and have overhead cover if possible. Decoy trenches should be left open.
Shadows are comparatively gray in snow- covered terrain.
Making sure dark military objects have dark terrain objects for background, avoiding movements that leave conspicuous and meaningful tracks, and maintaining military installations which are covered with snow so that the snow does not melt off and leave them conspicuous, are important. Camouflage discipline is highly important in snow terrain. Care must be exercised in matching it, as its color varies from white to gray tones. However, due to texture difference these techniques are not effective against aerial photography. At present no practical material has been developed to reproduce the texture of snow.