Yes. Back in the good old days, we used prefix of VM (military) as opposed to VH (civil). Domestically we would use JDx. Internationally initial call to ATC would be VM-JDx and after initial contact, it would be shortened to VDx.
In fact on some squadrons, the JD indicated the squadron and the x was normally the first letter of the captains surname. Now that's personalised
re 748's all I can remember about them is that bl00dy mongrel APU SCREAMING!
