ATP-5-0-2-1 Staff Reference Guide Volume 1 Download
Page 381 of 440
Environmental Considerations 07 December 2020 ATP 5-0.2-1 365 Brake shoes. Bearings and bushings. Plastic and rubber parts, including seals. All filters. Generator components. Deploy with extra plastic bags to cover weapons and protect other equipment during maintenance or when not in use. Bring muzzle plugs. MOUNTAIN OPERATIONS N-13. Information in this section is derived from ATP 3-90.97, TC 3-97.61, and AR 70-38. N-14. Regardless of their appearance, rugged terrain is common among all types of mountains. Mountains may have isolated peaks, rounded crests, eroded ridges, gorges, high plains cut by valleys, and deep ravines. High rocky crags with glaciated peaks and year-round snow cover exist in mountain ranges at most latitudes in the western portion of the Americas and in Asia. Different types of rock and varied slopes present varied hazards (see TC 3-97.61 for a discussion on rock types and hazards, route classifications, and climbing condition estimates). N-15. Mountain weather can be extremely erratic. It varies from stormy winds to calm, and from extreme cold to warmth within a short time or with a minor shift in locality. The severity and variance of the weather causes it to have a major impact on military operations. N-16. Mountains are commonly classified according to elevation, which is the height of the immediate terrain in reference to sea level. Descriptors from the conditions for joint tasks follow: Very high—greater than 3,048 meters (10,000 feet). High—1,829 to 3,048 meters (6,000 to 10,000 feet). Moderately high—914 to 1,829 meters (3,000 to 6,000 feet). Moderately low—305 to 914 meters (1,000 to 3,000 feet). Low—152 to 305 meters (500 to 1000 feet). Very low—less than 152 meters (500 feet). MANEUVERING IN MOUNTAINOUS REGIONS N-17. Mountainous regions can severely degrade maneuverability due to snow, ice, terrain features, grades, and damage caused by frequent snowfall and weather. During weather events, fog, and cloudy conditions may limit visibility—up to white out conditions—posing threats and presenting opportunities for concealed movement. The area that stationary forces may be able to cover effectively may decrease due to obstructed fields of fire. Cover and concealment for dismounted and mounted forces are typically prevalent in mountainous regions below the timberline and unexpected above the timberline. Tables N-1 through N-3 on pages 365–366 detail some planning factors for maneuverability in mountainous regions. Table N-1. Mountainous terrain levels ATP 3-90.97 Level Description I Bottoms of valleys and main LOC II Ridges, slopes, and passes that overlook valleys III Dominant terrain of the summit region