Ah, Bob Viking, but what about the days when ...
The Army also had a Navy (RCT) and an Air Force (AAC)
The Navy also had an Army (RM) and an Air Force (FAA)
The RAF also had a Navy (Marine Branch) and an Army (RAF Regt)
Now try and advertise that melange!!
Sadly it tends to be all about Aircrew ... especially FJ pilots.