Telephone Operator
Pony Express
Semaphore
Signal fire
All obsolete. And that’s good.
I can still scream a message at my neighbor!
Kind of like how Garret Morris used to do the “messages for the hard of hearing” on the old SNL.
Semaphore is still utilized by the Navy. Mainly in close in situations such as Underway replenishments when EMCON is set preventing radio communications.
Signalmen take great pride in trying to “out flag” one another.