Author's Note
There are many reasons in both Supernatural and M*A*S*H's canons as to why this story is impossible. This story is just for fun, so please limit criticism to the story and writing, not the logistics of the canon. As far as canonical placement goes, the story will take place between Dean receiving the Mark of Cain and the death of Abaddon in the Supernatural timeline, and after the departure of Radar, but before Klinger's promotion to Sergeant in the M*A*S*H timeline.
That being said, please enjoy this story and leave feedback!