After 26 years in communications in the military I can tell you that “shoot & scoot” is not as easy as some would say. As for Morse code I don’t find it much use as not many know it.
If you are trying to remain undetected it’s damn near impossible. If you key you mic for more than a few seconds you can be DF’d (direction finding). My favorite antennas were always the field expedients!
I was in the Jayhawks LRRP in the 60s, I was the Radio Operator...we used ANGR 47s and were able, with CW, to reach Ft Bragg from the edge of the woods in Germany. we would stretch our antennas along the top wire of a farmers field. We were all about “Shoot and Scoot” In VN I was commo chief in the 2/327 of the 101st. definitly improvised antenna, canteen thrown over a limb to place the antenna worked for me...