Let’s skip the gentle jokes. U.N.I.T. stands for Unified Intelligence Taskforce.
I know. Not quite a proper acronym, but they had to sneak the extra ’N’ in there to make it easy to say. How would you even pronounce UIT?
UNIT is Britain’s version of the Men in Black. They attempt to get a handle on all the extra-terestrial happenings in the UK. That usually means trying to help the Doctor in handling threats.
And by helping, that usually means getting in the way, putting themselves in danger so the Doctor has to rescue them before he can deal with the real threat.
I don’t have a lot of good things to say about UNIT. I’m sure they’re more competent than I am when it comes to hostile aliens, but not by much.
The one cool thing I can say is that with the help of UNIT, and similar groups from around the world, they made The Doctor President of the World. A title he was reluctant to accept, but has found a perk or two in the position.