It was already night time as Carlo and Alex's subordinates were moving slowly towards the school exit. The enemy soldiers would try and box them in, but since Carlo and Alex's subordinates knew the layout of the school better, they were able to somehow outmaneuver the enemy soldiers.
Of course Carlo was aware that heading to the exit of the school was just asking to be surrounded. So instead he made the enemy soldiers think he and his group were heading towards the front exit. Yet in reality they were actually heading towards the back of the school.
After a few more enemy encounters, Carlo and his group were finally able to leave the school grounds. Now that they escaped the school, the next thing they needed to do was converge with Alex's group.
It was night time, so it was easier for Carlo and his group to silently move around. Still it was a lot harder than anticipated to move around. The number of Empire soldiers seem to grow as more time passes by.