Special forces have played an important role throughout the history of warfare, whenever the aim was to achieve disruption by "hit and run" and sabotage, rather than more traditional conventional combat.Other significant roles lay in reconnaissance, providing essential intelligence from near or among the enemy and increasingly in combating irregular forces, their infrastructure and activities.Chinese strategist Jiang Ziya, in his Six Secret Teachings, described recruiting talented and motivated men into specialized elite units with functions such as commanding heights and making rapid long-distance advances.[15] During the Napoleonic wars, rifle regiments and sapper units were formed that held specialised roles in reconnaissance and skirmishing and were not committed to the formal battle lines.They were both elite assault units trained to a much higher level than that of average troops and tasked to carry out daring attacks and bold raids against enemy defenses.Nicknamed the Knives of Death (Spanish: Cuchillos de la Muerte), the regiment relied almost exclusively on the use of blade weapons, particularly bayonets.In 1940, the British Commandos were formed following Winston Churchill's call for "specially trained troops of the hunter class, who can develop a reign of terror down the enemy coast.[25] By the autumn of 1940 more than 2,000 men had volunteered and in November 1940 these new units were organised into a Special Service Brigade consisting of four battalions under the command of Brigadier J. C.Training and assessment started immediately on arrival, with the volunteers having to complete an 8-mile (13 km) march with all their equipment from the Spean Bridge railway station to the commando depot.Speed and endurance marches were conducted up and down the nearby mountain ranges and over assault courses that included a zip-line over Loch Arkaig, all while carrying arms and full equipment.Reaching a wartime strength of over 30 individual units and four assault brigades, the Commandos served in all theatres of war from the Arctic Circle to Europe and from the Mediterranean and Middle East to South-East Asia.Their operations ranged from small groups of men landing from the sea or by parachute to a brigade of assault troops spearheading the Allied invasions of Europe and Asia.After Layforce was disbanded, Stirling remained convinced that due to the mechanized nature of war a small team of highly trained soldiers with the advantage of surprise could exact greater damage to the enemy's ability to fight than an entire platoon.Transported by the Long Range Desert Group (which carried out deep penetration, covert reconnaissance patrols, intelligence missions and attacks behind the enemy lines from 1940), they caused severe damage to the harbour, petrol tanks and storage facilities.[citation needed] Immediately after the German occupation of Greece in April–May 1941, the Greek government fled to Egypt and started to form military units in exile.In August 1942 the Company of Chosen Immortals (Greek: Λόχος Επιλέκτων Αθανάτων) was formed under Cavalry Major Antonios Stefanakis in Palestine, with 200 men.[37] In an attempt to achieve its aims the government in exile gave orders to the Polish resistance and formed a special military unit in Britain with the soldiers called Cichociemni (“silent and unseen”) paratroopers to be deployed into Poland.With an establishment of 17 officers and 256 men, the independent companies were trained as "stay behind" forces, a role that they were later employed in against the Japanese in the South West Pacific Area during 1942–43, most notably fighting a guerrilla campaign in Timor, as well as actions in New Guinea.They continued to act independently and were often assigned at brigade level during the later stages of the war, taking part in the fighting in New Guinea, Bougainville and Borneo, where they were employed largely in long-range reconnaissance and flank protection roles.[41] The United States formed the Office of Strategic Services (OSS) during World War II under the Medal of Honor recipient William J. Donovan.[This quote needs a citation] In Italy, the Decima Flottiglia MAS was responsible for the sinking and damage of considerable British tonnage in the Mediterranean.The paratroop brigades were organized into the Teishin Shudan as the first division-level raiding unit, at the main Japanese airborne base, Karasehara Airfield, Kyūshū, Japan.[citation needed] However, as with similar airborne units created by the Allies and other Axis powers, the Japanese paratroops suffered from a disproportionately high casualty rate, and the loss of men who required such extensive and expensive training limited their operations to only the most critical ones.Although structured as a division, its capabilities were much lower, as its six regiments had manpower equivalent to a standard infantry battalion, and it lacked any form of artillery, and had to rely on other units for logistical support.[citation needed] Some 750 men from the 2nd Raiding Brigade, of this group were assigned to attack American air bases on Luzon and Leyte on the night of 6 December 1944.[citation needed] During World War II, the Finnish Army and Border Guard organized sissi forces into a long-range reconnaissance patrol (kaukopartio) units.The U.S. invasion of Afghanistan involved special forces from several coalition nations, who played a major role in removing the Taliban from power in 2001–2002.