Using wildcard in bash loop array - bash

Question

I've got a collection of hundreds of directories ordered in alphabetical order and with differently named files inside. These directories I want to copy over to another location using rsync.
I don't wanna go over all the directories manually, but instead I want to use the --include option of rsync or create a loop in bash to go over the directories.
For far I've tried using the bash script below, but had no success yet.
for dir in {A..Z}; do
echo "$dir";
rsync --progress --include $dir'*' --exclude '*' -rt -e ssh username#192.168.1.123:/source/directory/ ~/target/directory/
done;
Does anyone know what would be the correct way to go over the directories using rsync's --include option?
Update:
The bash script above was more to try out the loop to go over my directories and see what comes out. The command I actually wanted to use was this one:
for dir in /*; do
rsync --progress --include $dir'*' --exclude '*' --bwlimit=2000 -rt -e ssh username#192.168.1.123:/source/directory/ ~/target/directory/
done;
I know bash can do something like {A..Z}, but this doesn't seem to get me the result I want. I already copied half of the alphabet of directories so I was trying {F..Z} as an array.
Update
I've come up with the following script to run from my source directories location.
#!/bin/bash
time=$(date +"%Y-%m-%d %H:%M:%S") # For time indication
dir=/source/directory/[P-Z]* # Array of directories with name starting with "P" to "Z"
printf "[$time] Transferring: /source/directory/\"$dir\"\n"
rsync -trP -e 'ssh -p 123' --bwlimit=2000 $dir username#192.168.1.123:/target/directory
This will transfer all directories from the source directory with names starting with character "P" to "Z" over ssh using port 123.
This works for me in a shell script. I'm sure there are better ways to do this in a single line command, but this one I just came up with to help myself out.

Answer 1

Sounds like you want recursive rsync. I'd go with:
rsync -r / --restOfYourRsyncArgs
That walks over every file/folder/subfolder in / (could be A LOT, consider excludes and/or a different target path) and uploads/downloads. Set excludes for files and folders you don't want sent.

Answer 2

I've come up with the following script to run from my source directories location.
#!/bin/bash
time=$(date +"%Y-%m-%d %H:%M:%S") # For time indication
dir=/source/directory/[P-Z]* # Array of directories with name starting with "P" to "Z"
printf "[$time] Transferring: /source/directory/\"$dir\"\n"
rsync -trP -e 'ssh -p 123' --bwlimit=2000 $dir username#192.168.1.123:/target/directory
This will transfer all directories from the source directory with names starting with character "P" to "Z" over ssh using port 123. This works for me in a shell script. I'm sure there are better ways to do this in a single line command, but this one I just came up with to help myself out.