Defensive Strat.

Since this tournament has awhile to go, I am curious what everyone's thoughts are on stacking armies. I am in League C, and even at my max production with 7 sovereignty claims increasing production, I will eventually run out of troops as the enemies grow in numbers. At that point is my chance of winning prestige over with? Or will stacking armies come in handy.

I am building massive amounts of defensive troops in one of my nearby towns. My current strategy is to try and keep replenishing my primary commander's army every day. Once that can't keep up, I plan to send my other army to aid in the defense of the same stone as my primary army. 

I know this will cause the commanders to split XP. Is anyone else anticipating this happening? 

I think the best strategy would be to hope that the secondary commander has low life and will die in combat, allowing his troops to stay and defend, but not cause the primary commander to loose XP.