the specialities Deathwatch Devastator marine - all marines pass through the
Devastator squads during the initial rotation & can handle all the heavy weapons used by the Marines but it never does any harm to have a real expert on hand & this one is as he has returned to the devastators after being rotated through the other specialities.
Deathwatch Assault marine all marines pass through the
Assault squads during the initial rotation & are experienced and deadly in close combat but these are real experts as they have returned to the assault squads after being rotated through the other specialities
Deathwatch Tactical marine the final stop on the rotation & where most marines stay, excellent generalists familiar with though not as skilled as the specialists with either close combat or heavy weapons they are tactically flexible and develop leadership skills as they advance, leadership being essential to the Squad mode in combat.
Deathwatch Techmarine combat engineers & technicians initiates of the machine cult
Deathwatch Librarian Psychers significantly more powerful than the sanctioned ones in
Dark heresy but much more short ranged than the Astropaths of
Rogue trader Deathwatch Apothecaries I am still familiarising myself with the last three character specialisations as they are more complicated & require a deeper reading of the rules.
Ginger