What was the biggest rule you broke? Would you do it again?

My biggest violation of rules was during the midwatch when I was the Engineering Officer of the Watch on a SSBN. I had my Electrical Operator in a goofy mood, and loitering in the door to the maneuvering area. I told him to get back in front of his panel before I closed the door on him and he was outside of maneuvering while on watch. He got this funny look, and ran out of maneuvering, ran back to the Engineroom Escape Trunk, and came back. I chewed him up one side and down the other, and he realized how stupid he had been. However, I was REQUIRED to immediately relieve him, contact the Engineer, and basically end his career. I didn't do it. He was a nice guy, who made one (BIG) mistake. He was always telling us how he was going to go to college on his GI Bill, become a minister, and come back into the Navy as a Chaplain. I let him off, and he never did something that dumb again. So I'm glad he got to go on with his life. HOWEVER, in hind-sight, I had to be careful with that watch section for a year until I transferred. The Reactor Operator and Throttleman would never have told anyone what the EM2 had done (they wouldn't have been safe on the sub if they had caused another Petty Officer to get disqualified); however, if they had done something serious that I had to discipline them for, to try to save their own skin they might have said, "How come EM2 XXXXX could leave Maneuvering while on watch and get away with it, but I get busted for ......?" So it did impact my ability to properly lead and supervise that group. There are definitely times when you use your judgment and break a rule because it is the "right" thing to do. But a word of caution to you junior folks. Don't do it if it will affect your ability to do your job properly in the future.