Thank you for this test, it happened to be a good spanking for us.
We have lost our main artillery Prussian+Russian very early, so we remained under the fire of the best French artillery during the whole battle without efficient counter-battery fire. Lancier and me pushed quite well on the left flank, as planned, but in the end the French sent full backup from the Prussia-Russian front, and we got busted just when we were about to finally take this LOC (our only goal in this battle).
Our opponent played really well, to be honest, I hardly noticed he was alone against 4 of us. His army had a power of 500, ours (combined) 448. So he was about 10% more powerful than us, but alone.
The morale-shaking Prussia on a flank was a bad idea.
Replay file (requires the right v6 beta version):
http://www.mediafire.com/download/cdjrd8gekjcyhmv/4v1-N.replay