For some reason, 1. 5 years into the game my scientists discovered ground units I never created. They seem to be the default ones, which I turned off in game generation.
That is civilian research
They did it again April year 4, presumably because I obsoleted their units;
Since I apparently am not allowed to hide civilian units through obsoletion, can we please hide them from the Formation Templates tab of the Ground Forces window, like we can in the Order of Battle tab?