I'm on 33.. Honor medals drop hard here too :-( I have been actively hunting..

archer attacks:

Grassland lvl 6=1
grassland lvl 7 = 2

Warrior attacks;

3000 warriors to lvl 1 NPC =1
12,0000 lvl 2 NPC 1 medal

20,000 lvl 3= 1 medal

Ballistas (none had losses)

lvl3 NPC = 2
lvl 4 = 1
lvl 5 =1