Fu Baoguo was a seasoned veteran of the battlefield. In spite of his hopes to save the old marshal, he did not foolishly deploy all of his military strength in the relief operation but kept half of the Steel Cavalry behind. After all, his current responsibility was to build another Resilience Fortress and block Dongxuan's invasion the best he could!
However, the tides of the battle were quickly changing. As Yun Yang entered the fray, their side's morale was significantly boosted. Since the Serving Troop and half of the Steel Cavalry had already united with the Old Marshal's guards, he had to give it a go. Otherwise, not only was there the chance that the old marshal's remaining ship would be lost, the Serving Troop and half of his Steel Cavalry would have to be buried together as well!
By then, the loss outweighed the gain; the chances for his combat force to rebuild the new defense line would be greatly damaged. How could they then defend against Dongxuan's army?