A suggestion: Three of the indicators in the battle screen are horizontal: the cannons, one's own life, and enemy's life. I would strongly suggest that all three of these indicators be set perpendicular, so that captains need not do mental gymnastics to translate which cannons are loaded, which side they need to defend, or which side of an enemy they need to attack.
I've asked around our quite large guild and this seems to be a very common opinion. Many thanks!
Sturmherold