Good episode overall, although I really wish the men on the wall hadn't spent so much time watching the wildings set up to pull down the gate. It felt like the director/writers wanted to show this really cool thing instead of sticking to the reality of the situation. I do appreciate their continued correct terminology regarding "loosing" the arrows instead of "firing".
They sent ravens, but only one paid attention, thanks to a certain red witch.
Do you remember what episode this was in?