On 14 September 2015, the Syrian Arab Army (SAA) – in cooperation with the National Defence Forces (NDF) and the Al-Ba’ath Battalion – launched a fresh offensive inside the Aleppo Governorate’s southeastern countryside in order to lift the Islamic State of Iraq and al-Sham’s (ISIS) two-year-long siege of the isolated Kuweires Military Airbase. This offensive was later complemented by another effort starting mid-October further south, which would be aimed at cementing government control over the main logistical route to Aleppo from central Syria.