Honour still means something in this WW1 report. In 1916 British POW, Robert Campbell, wrote the Kaiser for a two week release from prison in Magdeburg to see his dying mother in Kent, The Kaiser agreed, taking as bond Captain Robert Campbell's word of honour as an army officer that he would return. He saw his mom, returned to Germany as a POW and was imprisoned until the war was over.
A tradition more breached than observed in Ottawa is that a minister who is compromised must resign for honour's sake. In bizzaro land to the south of us, the notion such a tradition ever even existed is in doubt. Few laws are needed when you can count on a man's word of honour.