I'm curious to know, which are your favourite Confrontation missions and if you know the source, where they come from would be helpfull, too. I want to gather a set of mission of demoing the game, because blood bath seams to be a bad choice for demoing the game at my demos. I though about 6 missions giving the interesed player a chance to read and choose one or to let a dice choose one. What do you think about that? Should I consider more scenarios? I'm also searching where the mission "The Three Bridges" came from. Does anybody know that? Also a small hint what type of terrain is needed for the missions to you would be helpfull as well.
You already named my favourite one, the "Three Bridges". This scenario was from the Tournament of 05/06. Basically, I like scnearios where you have to do something with the scenic elements and I don't like missions where you have to collect markers, because usually I play armies with lesser numbers. Therefore stuff like "Timber!" (same tournament from 05/06) or "Hunt for Skulls" (CH8) are not my favourite ones. In the first one, you have to cut wood and collect wood markers, in the latter ou have to attack skeletons and collect skull markers. For those missions, you don't need extra terrain. A marker where the trees are (or empty bases) or where the skeletons appear, are enough. I cut some infantery base sized pieces of wood and glued trees on it.
There are some missions in the Dogs of War Rulebook, too, "Destruction" being my favourite of them, where you have to destroy scenic elements, but you can also use Confrontation cards for the size of the objects.
Further, I like "Robber Hunt", where there is a robber's camp in the middle and they start fleeing when the armies approach. Here you need extra miniatures for the robbers and a camp of the size of 10x10cm. "Fountain of life" can be interesting, but it's a bit hard: every miniature has Ephemeral/4 and only the fountain in the middle (2 Confrontation cards sized) can heal it.
I'd suggest to go for not too complicated missions. Those collect missions could be ideal, because the players don't have to engage the other to win. Destroying scenery or preventing the other player from doing so is also fun. Challenging could be some rescue or bodyguard mission, like "Ambassadors", where one group guards a group of ambassadors and the other tries to kill them, no special scenery needed. There are a lot of scenarios with a ton of special rules and stuff, they might not be the best option for beginners.
And, as an anecdote, I once played a mission, where every warband (we played Dogs of War) had an extra miniature who wanted the other on the opposed side to die. My opponent hid his figure behind his troups, but I had two scouts left, charged in the first round and killed the target.
I added three (german) mission descriptions, a part official from the German Confederation. It's from the seasons for 2005/06 and 2007 and for the German masters from 2012.