Mountains present natural hazards such as lightning, strong gusts of wind, rockfalls, avalanches, snowpacks, ice, extreme cold, and glaciers with their crevasses; in these ways, it can be similar to cold-weather warfare.
Movement, reinforcements, and medical evacuation up and down steep slopes and areas in which even pack animals cannot reach involves an enormous exertion of energy.
[1] In 218 BC, the Carthaginian army commander Hannibal marched troops, cavalry and African elephants across the Alps in an effort to conquer Rome by approaching it from north of the Italian Peninsula.
[2] The term mountain warfare is said to have come about in the Middle Ages after the European monarchies found it difficult to fight the armies of the Old Swiss Confederacy in the Alps.
The Austro-Hungarian defence repelled Italian attacks by taking advantage of the terrain in the Julian Alps and the Dolomites, where frostbite and avalanches proved deadlier than bullets.
A light machine gun team would open fire towards the high enemy position from a distance, offering cover for the remaining soldiers to gradually advance.
[12] After the Kargil War, the Indian Army implemented specialist training on artillery use in the mountains, where ballistic projectiles have different characteristics than at sea level.
However, during the opening stage of the war, there was military action on the bleak mountainous island of South Georgia, where a British expedition sought to eject occupying Argentine forces.
South Georgia is a periantarctic island, and the conflict took place during the southern winter and so Alpine conditions prevailed almost down to sea level.
[15] Kunar and eastern Nuristan are strategic terrain since the area constitutes a major infiltration route into Afghanistan, and insurgents can enter the provinces from any number of places along the border with Pakistan to gain access to a vast network of river valleys.
In that part of Afghanistan (Regional Command East), the US military adopted a hybrid style of mountain warfare incorporating counterinsurgency (COIN) theory in which the population is paramount as the center of gravity in the fight.
Mountain warfare training is arduous and in many countries the exclusive preserve of elite units such as special forces or commandos, which as part of their remit should have the ability to fight in difficult terrain such as the Royal Marines.