What is considered the most secure method of communication in a defense context?

The most secure method of communication in a defense context is messenger communication. This approach involves sending individuals who can carry messages by hand, minimizing the risk of interception that can occur with electronic or visual signals. Messengers can navigate varied terrain and use their judgment to arrive at the destination without broadcasting information over any medium that might be monitored by adversaries.

By utilizing a messenger, you significantly reduce the potential for eavesdropping, signal interception, or electronic warfare tactics that can compromise other forms of communication, such as radio signals or telegraphs. Additionally, mesenger communications can be more adaptable to changing situations, as they can relay information verbally and in real time, often without the vulnerabilities associated with technological communication means.

Radio communications can offer quick and efficient messaging capability but are susceptible to interception or jamming. Telegraphs, while somewhat secure, rely on electrical signals that could be intercepted and decoded. Similarly, signal flags, although useful in specific contexts, are limited by visibility and can be easily seen by an enemy, making them a less secure choice overall.