Ibn Humayd ad-Dawish, and Ibn Hithlayn, the leaders of the revolt. The Ikhwanis also raided Kuwait in January 1928. With the Ikhwan leadership defiant, Ibn Saud took to the field to lead his army, which was now supported by four British aircraft (flown by British pilots) and a fleet of 200 military vehicles that symbolized the modernization that the Ikhwan abhorred. After suffering a major defeat at the Battle of Sabilla (30 March 1929), the main body of Ikhwan surrendered to British forces on the Saudi-Kuwaiti frontier in January 1930.Ibn Saud completed the military defeat of the Ikhwan rebels "with a deft mix of punishment and rehabilitation" to avoid antagonizing the bulk of Ikhwan who had agreed with many of the rebels' complaints but remained on the sidelines. Rebel leaders Duwish and Ibn Bujad "died in captivity in Riyadh." Their tribal followers were punished with the confiscation of "the lion's share of their camels and horses." The remnants of the irregular Ikhwanis formed units in Ibn Saud's new military institution, initially known as the White Army (from the name of their white thawb, robe), later called the National Guard. 1979 Grand Mosque seizure Insurgents who participated in the 1979 Grand Mosque seizure in Mecca referred to themselves as the 'al-Ikhwan', thus in their eyes justifying the seizure as a means to liberate the Kingdom from what they deemed as 'Western apostasy'. They were led by Juhayman al-Otaybi, an echo of his father's charge in 1921 against the former Saudi king. The seizure and its aftermath led to the increased power and influence of conservative clerics over Saudi political, cultural and social life, putting an abrupt end to the comparatively moderate outlook (at the time) of the kingdom towards modernization and Westernization. See also Ogab bin Mohaia House of Saud Wilfred Thesiger Notes References History of Saudi Arabia Ibn Saud Military history of Saudi Arabia Paramilitary organisations based in Saudi Arabia