Not sure if it counts as a "correction" since it was more a defensive action to stop a fight and prevent further injury to my dog- but I suppose technically it could count. LOL
I yanked a Bull Terrier off the ground by the neck and punched it in the face, right between the eyes, twice, in order to make it let go of my 25 lb dog, which it had attacked for no particular reason. Punched hard enough to make my knuckles swell up. Truth be told I was *hoping* the dog would let go of my dog and end up biting ME, as then I would have had a perfectly legal and valid excuse for putting a .357 round through its misshapen skull. No such luck. She did let go of my dog and didn't seem too interested in biting me, of course it could have been the fact that she couldn't breathe.
The dog was left in my care by some jerk "acquaintance" my husband knew.....hubby had offered to let him stay with us after his wife died (didn't ask me first, I wasn't thrilled about it). Guy didn't mention his dogs until he showed up, then he left to go on the road (truck driver) and I knew from the beginning that the Bull Terrier was going to be trouble. I have outdoor kennels but guy pitched a fit about how his "babies" couldn't be outside. For a month I rotated dogs using crates & the kennels outside to keep my 4 dogs separate from his 2. One momentary lapse in my vigilance on a Sunday afternoon, and that inbred, deformed idiot of a dog ran across the yard and jumped on my dog from behind. Ripped his front leg wide open and the only thing that saved him from a neck injury was the brass nameplate on his collar, which ended up dented with teethmarks.
After that, his "babies" lived outside permanently (he was lucky I at least fed the b*stards) and I put my foot down....the dogs are GONE or you're BOTH gone....the jerk came home, got his sh*t and got out of our house.
Other than that, actual training corrections? Worked with a big male Drahthaar (basically a version of a German Wirehaired Pointer) who was as wired as a meth-head and birdy as all get.....could have swung a sledgehammer at his head and he'd still ignore you. Hard leash corrections/hanging, an occasional thwack in the nuts when he broke whoa- that's about it.....oddly enough he didn't require a high e-collar stim to get him to turn in the field, that he was pretty good about.