It took Reign about 2 days to travel to the west fortification, he had of course traveled together with the reinforcements that were being sent that way. To be attacked by a smaller scaled army of the coalition was a rare thing to happen, the fortifications were incredibly strong and the chance of a smaller army destroying them was almost non-existent. Of course, it's not like similar things hadn't happened before, the coalition tried multiple crafty methods in order to take the reinforcements down, sending a smaller army was one of those methods, and the first time they had done so, they nearly managed to achieve their goal.