Squad doesn’t have TrackIR support yet so I went looking for a program that would at least translate some head movements to keystroke commands and found TrackMapper ...
http://kaf.tri6.net/trackmapper/It’s an OLD program but it still works like a charm with TrackIR 5!
It only tracks yaw and pitch head movements though (because that's all TrackIR did way back then I guess
) so I have left and right mapped to my lean left and lean right keys, down to my go prone key toggle and up to my Squad selection/map screen.
If anyone knows of a newer program that does this, let me know.