Wonder how many other rules he got wrong. And it seems like his performance is entirely reliant upon TO's allowing the 'drilled before charges' ruling.
I don't offhand have a problem with it. Drilled is in a weird spot. It either seems VERY good for its points, if you can use it to redress the ranks before a charge.
OR, it seems pretty pointless and overcosted, if you cannot.
Also, was he doing drilled directly? If he just launches a 'marching colunn flying formation' through the air to land behind the enemy line, with their backs to the enemy, his unit can't charge in the next turn because redress the ranks doesn't allow you to change facing. Was he executing a very expensive wheel? I don't think you can perform a turn while marching, only wheels.