Long time ago. I was in Army Mars during my high school days in the late 60s. Only equipment I had was a Heath DX60 tx and Drake 2B Rx. We had several cw nets during the week, plus we could check into the ssb nets using cw. Lost track of them when I joined USAF and their program was ssb and rtty. Lost track of them, but I think cw was dropped when DOD dropped cw.
Many of the hams who mentored me in the 60s were ex airborne radio operators very cw proficient.