Flight of the Heron plot idea

I just had an idea: could I manoeuvre Keith into the Jacobite army and Ewen into the Hanoverian one?

And I think I can: actually there was a prominent Wyndham politician who was a Jacobite, so it's quite plausible that Keith's family could have been Jacobite. What if Keith's father on his deathbed extracted a promise from Keith that he would support a Jacobite rising? Keith himself might have mixed feelings about this, but when he is so conveniently captured at the outset of the Rising, there's an excellent opportunity to follow his family tradition and his father's last wish and join up.

As for Ewen, I don't think I can maneuver him into the Hanoverian army as long as he is a Cameron chieftain. But what if he were a younger son without land of his own? I mean, Alan Breck Stewart was in the British army before Prestonpans, probably just as a job and a way to gain experience, and Cluny McPherson had a commission in the British army before he changed sides (there are more examples). So it's not unreasonable.

I have not yet thought further about this in terms of engineering interesting plot situations where Keith and Ewen could meet--any ideas? : D