Kerwyn uses his wand to go scouting and vanishes from the sight of everyone but Lenya.
As he passes through the entrance, Kerwyn realizes that the hobgoblin guards had used the rubble to give themselves a heavily fortified position, cover from those outside the compound, those at the entrance, and even the Temple. Lylamwyn's fireball would have been lucky to singe a single hobgoblin. Kerwyn hears the sounds of several goblins (engaged in a dice game perhaps) and another goblin who is handling two dogs.
Kerwyn also sees the Massive Bronze doors of the Temple entrance. The doors are over twenty feet high and twenty feet wide. Massive broken iron chains hang by the doors. Another pair of hobgoblin guards (these with no cover) are in front of the doors, holding the leash to another pair of dogs.
Kerwyn sees a few more dogs playing tug of war over a bone further in the compound.
The dogs near the entrance to the compound start barking. Their hobgoblin handler calls out, "Bree-Yark?" and pokes his head from cover to look around. The dice game conversation has ended. The Hobgoblin at the entrance to the Temple yells out "Bree-Yark!" as the dogs at the Temple entrance begin to howl.
Kerwyn vaguely remembers hearing in a Tavern from some adventurers who were returning from a Keep on the Borderlands that "Bree-Yark" is goblinish for "We Surrender." Raner, who is a bit further away from the Temple compound and actually speaks goblinish, knows that "Bree-Yark" means "We need Reinforcements".