As soon as the trees were set on fire, the orcs in the camp immediately started to react.
At first, the orcs wandered around in chaos since they had no idea what was happening. But of course, that couldn't be blamed on them since the forest around them had suddenly been set on fire.
To make things worse, there were fire arrows that came out of nowhere that landed in their camp, setting the buildings on fire.
The orcs were only trying to survive at this point, they didn't care at all what had caused this fire.
But since there was chaos, it was hard for them to escape.
This was made worse since the line of fire was all around them.
The only place that didn't have fire was the entrance of the orc camp which was strangely free of any flames. So following their instincts to survive, they started running at the entrance.