Who is hubert?

Hubert is a simple minded young man who lives in the same village as Jo. Hubert is the son of the mayor and as such is allowed to beat the drum when something significant takes place in order to call all the people into the village square. Hubert likes to play soldier, and when the soldier's come, he pretends to shoot them with a stick. Later, when the soldiers leave, Hubert fires at them with Grandpere's hidden rifle. This ends in Hubert's death.