A short wave radio signal at 20 MHz would exist in which standard military band?

A short wave radio signal at 20 MHz falls within the High Frequency (HF) band, which is typically used for various military communications. Specifically, it is part of the 2 to 30 MHz frequency range. The military often utilizes specific sub-bands within this range for tactical communication and other operational purposes. Thus, a 20 MHz signal would be relevant in military HF operations.