I read one book, where a British officer noted that a German machinegun, kept firing right up to the 11am curfew, the crew then stopped, packed up their gun, stood, saluted and marched off.
British artillery loaded & fired a final barrage minutes before 11am and, you won't find any French graves, with the date of death as 11/11/18, despite men being sent to attack on the day, such was the embarassment of politicians, that their deaths were marked on their graves as being 10/11/18.
http://en.wikipedia.org/wiki/George_Lawrence_Price the last Commonwealth soldier to be killed on the day.
http://news.bbc.co.uk/1/hi/magazine/7696021.stm
Those wounded prior to the Armistice, did of course, continue to die, one could also argue, that those killed by the tons of unexploded ordinance, still harvested from fields in France & Belgium, are casualties of the war too.