[Wayne McGee]

Back to subject.
As unlikely as it may be, I am not calling into question the possibility of an Infantry MWO holding the qualification of Master Gunner. Nor am I suggesting that an Artillery MWO does not wear the trade badge of Master Gunner if so qualified (though I do not beleive he does), but that is out of my lane.
However, as I said earlier, no Infantry Warrant Officer wears a Trade Badge.