Actually I believe it has been more honoured than broken.
I remember one occasion where our skipper went beyond the point of discretion but the rest of the crew were more abstemious. Really OC Goose should have grounded us.
On another occasion, same crew, and I was plastered. A sqn cdr from a different group was most disproving but didn't make the sensibl ecommand decision to ground me. Fortunately the aircraft broke.
Many years later, on large crewed aircraft none of the pilots I flew with drank to any extent the night before. Mores do change.
But it must be recognised that to err is human and not to force someone to lie if they did drink too much.