This is a class task in the style of a 'Model UN' debate.
The class is divided into groups which represent the USA, Britain and France. These groups must work together to develop a peace treaty to officially end WW1. The terms of peace must specifically deal with what punishments/sanctions should be placed on Germany to prevent them from trying to start a war again. The teacher plays the role of 'Germany' as she is not allowed to speak or contribute to the conference in any way (I jokingly placed a symbolic gag over my mouth for part of the lesson)
I ran this following on from a lesson about the losses each of the 'Big 3' suffered during WW1. I also really encouraged my students to get into character as their countries and imagine what they (the country) would want rather than what they (the student) would want for themselves and Germany.