We finally have some information from Chris about the games mechanics. Specifically, how Characters and Units will partially function.
Key Information Excerpt: "When you look at the picture below, suddenly the game takes shape. The image includes one Brotherhood of Steel Knight and two Scribes battling against two Super Mutants and a Mutant Hound. If we assume the Knight is a Character and the Scribes are a Unit then the Knight would act on its own, as an individual Character, whereas the Scribes would activate as a Unit and then presumably move and shoot with their own degree of freedom. Whether or not there is any coherency in the Unit, meaning ‘x’ unit must stay within ‘x’ inches of another member of its Unit, remains to be seen."