A can, Gouraud na ci gaba da kokarin sarrafa Sarki Faisal ya kai ga kai. Gouraud ya jagoranci sojojin Faransa wadanda suka murkushe masarautar Sarki Faisal a yakin Maysalun a ranar 23 ga Yuli, 1920, suka mamaye Damascus, suka kayar da sojojin kungiyar
Juyin Juya Halin Siriya kuma ya kafa Dokar Faransa ta Siriya. Wadannan yankuna an sake tsara su sau da yawa ta umarnin Gouraud, wanda ya fi shahara shine ƙirƙirar Jihar Babban Lebanon a ranar 1 ga Satumba, 1920. Gouraud ya zama Babban Kwamishinan Faransa a Siriya da Lebanon, shugaban shugaban gwamnatin mulkin mallaka a can.