Across the grim and dangerous Old World and beyond, warriors employ many different types of weapons against a multitude of foes. From the well-wrought axes of the Dwarfs to the less-sophisticated choppas of the Orcs, every race has its favoured weapons.
It is usual for all the models in a unit to carry the same weapons. It is acceptable for models belonging to the command group to be differently armed for the sake of identification.