There's a article on the main qrz page about a renaissance of sorts with militaries seeing a strong case for HF communications. That got me wondering about how back in WWII our militaries could reliably communicate via HF considering all the variables at play with band conditions and propagation. In my 5 years in Ham radio, I've learned the time of the day affects how different bands propagate. Knowing that, even I find it can be difficult to make contacts to far away locations using a band that has the highest probability of working. So does anyone know how they managed to keep in touch with remote locations from HQ. Did they relay things alot? Did they have the ability to work stations remotely? Or did they just use brute force with massive beam antennas that many of us only dream of. I really find WWII era communications techniques to be fascinating with all the advances they made during that time. It really was amazing what my grandparents generation accomplished.