itself. By about 1770, English duelists enthusiastically adopted the pistol, and sword duels dwindled. However, the custom of duelling with epées persisted well into the 20th century in France. Such modern duels were not fought to the death; the duellists' aim was instead merely to draw blood from the opponent's sword arm. Late modern history Military sidearm Towards the end of its useful life, the sword served more as a weapon of self-defence than for use on the battlefield, and the military importance of swords steadily decreased during the Modern Age. Even as a personal sidearm, the sword began to lose its preeminence in the early 19th century, reflecting the development of reliable handguns. However, swords were still normally carried in combat by cavalrymen and by officers of other branches throughout the 19th and early 20th centuries, both in colonial and European warfare. For example, during the Aceh War the Acehnese Klewangs, a sword similar to the machete, proved very effective in close quarters combat with Dutch troops, leading the Royal Netherlands East Indies Army to adopt a heavy cutlass, also called klewang (very similar in appearance to the US Navy Model 1917 Cutlass) to counter it. Mobile troops armed with carbines and klewangs succeeded in suppressing Aceh resistance where traditional infantry with rifle and bayonet had failed. From that time on until the 1950s the Royal Dutch East Indies Army, Royal Dutch Army, Royal Dutch Navy and Dutch police used these cutlasses called Klewang. Swords continued in general peacetime use by cavalry of most armies during the years prior to World War I. The British Army formally adopted a completely new design of cavalry sword in 1908, almost the last change in British Army weapons before the outbreak of the war. At the outbreak of World War I infantry officers in all combatant armies then involved (French, German, British, Austro-Hungarian, Russian, Belgian and Serbian) still carried swords as part of their field equipment. On mobilization in August 1914 all serving British Army officers were required to have their swords sharpened as the only peacetime use of the weapon had been for saluting on parade. The high visibility and limited practical use of the sword however led to it being abandoned within weeks, although most cavalry continued to carry sabres throughout the war. While retained as a symbol of rank and status by at least senior officers of infantry, artillery