Jaysh al-Islam Qassem Qadesh †(Operations commander in Marj)[3] Numan Awad (JaI military services chief)[4] Abu Ghazi †[6](HTS emir of Arbin) Capt.

On 28 April, sounds of intense fighting echoed through several suburbs of Eastern Ghouta, with Jaysh al-Islam fighters assaulting Tahrir al-Sham (HTS) and Rahman Legion forces.

On the same day, the Syrian Observatory for Human Rights has reported that 40 rebel fighters from all sides were killed in the clashes, including a HTS Emir in Arbin.

[14] On 29 April, masked gunmen stormed a hospital operated by Médecins Sans Frontières in Hazzeh and forced the MSF to suspend activities in the area.

[15] On 30 April, Jaysh al-Islam announced that they were waging a full-scale operation against HTS and warned fighters belonging to the Rahman Legion to not support them, as of that day 95 people have been killed during the infighting, according to SOHR.

However, the same day, HTS combatants allied with the Rahman Legion and Ahrar al-Sham stormed, and after intense clashes, captured the towns of Jisrin and Hazzeh.

[25] On 15 May, Jaysh al-Islam fighters stormed Tahrir al-Sham and Faylaq al-Rahman bases in Beit Sawa and Al-Asha'ari setting off intense firefights.

[30][better source needed] On 6 June, the Syrian Army managed to cut off Tal Farzat-al-Nashabiyah supply route for Jaysh al-Islam, thus further complicating their situation.