I started keeping track of how the medal hunt was going here on Server 84.

It's higher than it seems.

Here's the results for today.

69 flats/valleys hit.

LVL 10 Deserts gave up 1 Holy Water and 1 Courage
LVL 10 Grass gave up 2 Lions (this was the same valley with 8 total hits) and one Honor and one Nation (two different valleys)
LVL 10 Forest gave up 1 Freedom

That's 7 drops for 6 medals. Call it a 10% drop rate.

Deserts were hit most often because there's more of them.
I might have gotten more from the Forests but I claimed them on the first hit since I needed them.

I didn't hit any LVL 10 swamps or hills today as there were none in range that had a mix of troops I could attack.

But the encouraging thing is the 10% drop rate.

I also hit close to 50 LVL 5 NPC for no drops. And two LVL 10s for no drops.