The militia was formed in Iraq in 2007 to protect Yazidis in Iraq in the wake of attacks by Sunni Islamist insurgents as the Malik Al-Tawus Troop.[10] The Sinjar Resistance Units took part in the August 2014 Northern Iraq offensive, killing at least 22 fighters of the Islamic State and destroying five armored vehicles in the vicinity of the Sinjar Mountains.[2]
Hundreds of Yazidis received training from People's Protection Units (YPG) instructors at the Serimli military base in Qamishli, Syria, before being sent back to the Mount Sinjar frontlines.[11] These forces were re-branded as the "Sinjar Resistance Units".[12][13]
In October 2015, the YBŞ participated in the foundation of the Sinjar Alliance as an all-Yazidi joint commando umbrella structure. Besides their all-women offshoot, the Êzîdxan Women's Units (YJÊ), the formerly Peshmerga-aligned Protection Force of Sinjar (HPŞ)[1] and other independent Yazidi units committed to the united Yazidi front.[17]
Under the joint command of the Sinjar Alliance, the Sinjar Resistance Units took part in the November 2015 Sinjar offensive.[18] In 2017, KRG-aligned media outlets claimed that around 800 members had left the YBŞ, and that 400 of them had joined the Peshmerga.[19][20]
In accordance with an agreement of the Iraqi government, parts of the YBŞ joined the Popular Mobilization Forces as the "80th Regiment", while transferring several positions in the Sinjar Mountains to the Iraqi Army. However, the Iraqi military demanded that the YBŞ and other local militias withdrew from further posts as of early 2021; these demands were fuelled by the Iraqi government's desire to remove the PKK's presence from the Sinjar area. The YBŞ and other groups initially refused to follow these orders, arguing that they were not affiliated with the PKK.[4]
^Ridolfo, Kathleen (31 May 2007). "Christian population dwindling due to threats, attacks". Radio Free Europe / Radio Liberty. Retrieved 7 November 2014. 'We have formed a troop of the brave and faithful from the Yazidi clan called the Malik Al-Tawus [King Peacock] troop'