Morbus
Sonny, I Watched the Vault Bein' Built!

Besides, our units attack on sight, so it's kind of pointless in the end...
:EDIT:
I take back what I said. Hiding stealth units behind the trees MAY be a good idea, since stealth units are not very stealth to the player's eye...
:EDIT:
I take back what I said. Hiding stealth units behind the trees MAY be a good idea, since stealth units are not very stealth to the player's eye...