Outlander

It's no use, you decide and you tell the Horsemaster so.
"Then we will trudge on," He resigns. "Perhaps we will find refuge elsewhere."
The company turns north, but they do not get very far. By sunset the next day, you here screams coming from the back guard. The goblins have caught up. Your forces turn to meet them, but there is simply too much to fight.
Every last horse rider is killed.