Some people did not like this ceremonious style. But after all when you have to kill a man it costs nothing to be polite.

Winston Churchill (1874-1965) British statesman and author

The Second World War, Volume 3: The Grand Alliance, ch. 32 “Pearl Harbor” (1950)

On his closing his 8 Dec 1941 letter to the Japanese ambassador, informing him of the state of war between the UK and Japan, with "I have the honour to be, with high consideration, Sir, Your obedient servant."