Murad acted swiftly, besieging Constantinople and sending his armies to Salonika. The troops of the besieging force proceeded to loot and pillage the city. Antony had four veteran legions in addition to the troops that were besieging Mutina. By winter, Mongol troops were again besieging Zhongdu. Frederick's envoys had reached Constantinople, but Isaac was besieging rebels in Philadelphia. Victarion orders his fleet to assault the forces besieging the city. Hanno posted his army near Hippo Acra, where Matho's army was besieging the town. Cannons were less useful for the besieging army. Pyrrhus' army then began besieging Lilybaeum. He began the process of besieging the rebel castles, before wintering in the Duchy. Early attacked him to prevent or delay his return to Grant's forces besieging Petersburg. It also sent ships to help defend Constantinople against the besieging Turks (1453). Meanwhile, the Russian fleet was besieging Koroni with assistance from the Western Legion. Hou surprised Emperor Liang by besieging the Liang capital at Jiankang. Charles was still besieging Messina when Peter's forces first met him.