[quote=@BingTheWing]
Like someone who's an expert in maps, general topography, and a little bit of geology - perfect for expeditions.
[/quote]

Well yes I suppose, but the main focus of the mission is the averting of war, and the methods by which we realise that goal. If your character is only a land surveyor they would not have been taken for the mission in the first place, but it can be a facet of their character.