UNIT's personnel have a wide range of weaponry to call on, some custom-made to combat specific threats.Among these are special ammunition described by the Brigadier in Battlefield as armour-piercing rounds with a solid core and Teflon coating which "could go through a Dalek".Sherwin was uncertain if the army forces featured in The Web of Fear appeared as UNIT, but was "convinced" that, as a teaser for UNIT's more substantial role in The Invasion, The Web of Fear was supposed to have replaced the basic army forces that were seen in the story.
They wear PLCE pouches on police tac-vests, and also wear riot-protection arm pads and gloves, and have side-handle batons and quick-cuffs for arrests.
In a 2014 interview with Doctor Who Magazine, script editor Terrance Dicks recalled that he was present at the "birth" of UNIT during the production of the Doctor Who serial The Invasion (1968).
He credited both scriptwriter and script editor Derrick Sherwin and producer Peter Bryant as having come up with the idea beforehand, claiming that they were testing the concept in The Invasion before it had become central to the show in the Doctor Who serial Spearhead from Space (1970).
In "The Power of Three" (2012), Kate heads UNIT's scientific research department, which now has authority over the military branch.
the British troops of UNIT are armed with standard British Army weapons such as the L1A1 Self Loading Rifle, Sterling submachine gun, Browning Hi-Power pistol and wear 58 pattern webbing.