We learned an interesting fact in the last couple of weeks or so regarding the procedures our Navy colleagues have to follow when crossing airways.
Aircraft non squawking not talking to us are always taken as being beneath the Airway, our Navy colleagues apparently have to take avoiding action on those non squawkers.
We work very closely with Military ATCOs and I find them very helpful, it is the procedures they have to follow that are the issue, possibly introduced so long ago and simply not updated to deal with the traffic of today. To hand over traffic to a Military ATCO takes on average 3 times the length to a Civil ATCO.
It is a shame we seem to work to such contrary rules