An issue has arisen about whether the use of real-life military equipment brand names is legal in Particracy. Amazeroth & I have now had a chance to discuss the matter. We have resolved that brand names which feature RL names of people, organisations, places and so on should not be used, but other names, like simple number-letter combinations, should be allowed. For example, T90 and F-22 will be allowed, as will names involving animals, such as Leopard or Jaguar.
In due course, we plan to incorporate this into a new edition of the rules.