Jackcooper@lemmy.world to Asklemmy@lemmy.ml · 2 年前how did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?message-squaremessage-square41linkfedilinkarrow-up10arrow-down10file-text
arrow-up10arrow-down1message-squarehow did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?Jackcooper@lemmy.world to Asklemmy@lemmy.ml · 2 年前message-square41linkfedilinkfile-text
Let me know if there is a better community for this type of question. I am still learning my way around.
Thank you.