The original story is linked to the Shattered Fortress source book, where the event was just a foot note. Mr. Pardoe gave it wings. I suspect this is one the linked stories leading to the new Era. I won't call it a series unless mr. Pardoe makes sequel to it with the Dragoons fighting for the Empire against the Falcons.
I will be really disappointed if we don't get that novel. It would be leaving money on the table to not make that book