Well I dont understand how it can be unnoticed since when you flying as dragon, you can see those red force field very obviously. Maybe for the 1st time one wont know that its suicide for charging into the force field, but once die, I guess one will able to learn the lesson. Even those nests and catapults are in the force field, if their location are near the edge of the force field, you still can burn them down using dragon breath without entering the force field, or menuever your dragon around and hit them with fire sphere. As far I remember, those early catapult can easily taken down with 2 fire sphere.
If you still cant steer you dragon well in aerial combat, take your time to practice there, as you there will be more aerial battle ahead once you get to the other side of the fjord. And dont always stay in the same spot, steer your dragon around, use hit and run tactics if really overwhelm by too many catapults or flying enemies, as they all wont regen their health once being hit, beside those commander class flying enemies which can heals when low on hp. Those you might need bit practice on it.
