This lessens the change that you will move your legion into an unsafe position and lose it. Splits to make when you are all alone. Will quickly become a big stack. Both stacks recruit behemoths in the jungle and gorgons in the brush. Soon you should have two big stacks, because nobody wants to fight burly green creatures in the bramble.
Marginal attacks can be better than overwhelming attacks.
When you attack with overwhelming forces, your opponent usually flees and you only get half points. However, when your opponent has some chance of winning, many times he will fight and you will get full points. There will be a small chance that you will lose, but it only takes a handful of marginal victories before you get teleport. Attacking can make you stronger. Things to learn.