What is the name of the army commander who leaves the city to fight the Romans, and will his departure be before or after the army that invades the Holy Kaaba under the command of Sufyani?

The Mahdi is the leader of the army that Jesus son of Mary will descend upon. It is probable that the emergence of this army to fight the Romans will occur after the emergence of the Sufyani, as the Mahdi will emerge after the trials caused by the Sufyani, and then he will pursue the Romans. The delay of the fight against the Romans until after the Sufyani's demise is inferred from the fact that Jesus (peace be upon him) will descend after killing the Dajjal and after the emergence of Gog and Magog. Following this, the pleasant wind will come and take the souls of the believers, and then the Hour will be established upon the most wicked of people.