We had this come up for me personally, and based on the rules. Destroy standing first, then routed. At the same time, that seems to be more delt towards combat rather than winter, but i'm just curious what your guys opinion on it is.
I only had 4 food come winter, In one Space I had 3 Necromancers, The Knight and 2 Routed Archers. Now at first I went to take the Archers first when my friend reminded me of the routed first (So I killed two of my necros instead) I'm just curious, is that right? Pretty sure it is, but would be nice to put any doubts to rest.