It would be interesting to see true manning pyramids. I have done tours where the total number of RAF under my command has varied from around 100 to zero. When at 'zero' I have had extremes of truly no staff to high numbers of RN, Army, foreign military, civil servants, civilian specialists and civilian contractors to organise/lead/manage/herd/report on. In one extreme I also had POWs to look after.
The simplistic view that officers are only there to lead personnel of their own service is just not valid these days, if it ever was at all.