Current version: 4.9, released 17th January 2019.
There are even more Units included in the \Optionals\Addons\ folder which have additional requirements as follows:
uk3cb_baf_units_ace.pbo requires @ace3
uk3cb_baf_units_rhs.pbo requires @rhsUSAF, UK3CB_BAF_Vehicles_Chinook, UK3CB_BAF_Vehicles_Hercules
uk3cb_baf_units_woodland_cw.pbo requires @ace3 and @rhsUSAF
This mod takes advantage of @Ace3, @Task_Force_Radio and @ACRE features if they are present.