The Unit is a one of the kind show far as i know. It does not only look at the special forces operatives lives but what revolves around them. This I understand placed carefully into themes that everyone can learn and at the same entertain themselves from this action drama thriller TV series even my friends who are not fans action or the military agree too. And this is way I like watching "the unit".
1> Family, the operatives work is not only thing affected from their actions but their families too. This common link bring "the unit family" together and they help each other deal with things that comes on the way from family matters to the operators work.
2>Friendship / comradeship, if all things don't work and goes to hell at least they got each others back to achieve their objectives and get the hell out.
3> Sacrifice, a common military thing, these operatives go out in long or short mission away from their loved ones and comforts of home and risk their lives at the same time. Their family has to endure the absence of their sons, husbands and fathers.
4> Educational, is something i liked about the unit not only to get entertained also to educate on survival techniques,improvising and being resourceful.