I've fought several battles in which two enemies (allied with each other) attacked me at the same time. It's clear to me that these battles are much more difficult than the normal one-on-one fights. Since each enemy army can field up to 16 units, you are potentially outnumbered by 2-1 on the initial battlefield, even if you have as many men as both your enemies combined. It's even worse when each individual enemy army is a match for your troops. Add to that the fact that one army may hit you from the side while you're dealing with the other, and you have a very challenging battle on your hands.

Does anyone have any advice that helps them win in these difficult situations? (By the way, I'm referring to defensive battles; when I'm on the attack, it's usually easy to defeat one enemy at a time.)