How did invading militaries effectively communicate with the homeland when they were attacking a distant opponent? Example: How were strategic orders given from across a sea or ocean that did not render them uselessly out of date? | AskHistorians Archive Observer

How did invading militaries effectively communicate with the homeland when they were attacking a distant opponent? Example: How were strategic orders given from across a sea or ocean that did not render them uselessly out of date?

by sonorousAssailant

Bernardito

You ask a great question but you have not specified a time period or conflict. We do not allow questions that covers all of history at once.