In the last three decades, the great powers have become increasingly dependent on satellite communication (SATCOM), very high frequency (VHF), and ultra-high frequency (UHF) providing high bandwidth line of sight (LOS) communications. These military communication channels lack resilience because an EW campaign can affect both VHF and SATCOM simultaneously. The 1940s preferred spectrum, high frequency (HF), with its different propagation patterns, offers an opportunity for military communication resiliency in the 21st century. The concept of retrograding could give an operational advantage and create the ability to sustain communication in electronic warfare (EW) saturated environment.