While its exact foundation date is unknown, some sources allege that Nattoreh was first set up on 1 October 2011. Since its formation, the militia has taken part in several Syrian Democratic Forces-led operations against the Islamic State of Iraq and the Levant, such as the Manbij offensive, the Raqqa campaign (2016–2017), and the Deir ez-Zor campaign (2017–2019). Nattoreh also protects ceremonies and celebrations of the Assyrian Church of the East.