I don't know what kind of remembrance ceremonies go on in Europe, but the ones we have here are ones of remembering the past, vowing never to forget, and hoping for peace. Of course the way the world is nowadays, that's not working out too well.
Even so, this is an abbreviated broadcast of the 2015 Remembrance Day Ceremonies from Parliament Hill (the actual broadcast is longer, with various reporters talking to people beforehand - civilians and veterans who express what November 11 means to them). The newest part of the ceremony started spontaneously some years back - someone decided to leave their poppy on the Tomb of the Unknown Soldier, and it's become customary for the public to do that now. It's not a scripted part of the proceedings, but something that's become part of it - a way for people to do the equivalent of laying their own wreaths and pay their respects to the veterans.
I don't see any warmongering in this.