https://www.youtube.com/watch?v=qS9bfosI4uQ
I sent two attacks on a colony I was doing. Both attacks reached their destination correctly, and in the order provided by the game. Then halfway through, one general jumps over to the other general's camp, and acts like he's been fighting that one all along.
This cost me a few troops, though nothing crippling. However, it's a bit of an issue that the camp ordering the game gives me apparently cannot be trusted.