for /d %%d in (*) do cd "%%d" & move "*" ..\. & del * & cd ..
This is useful if you have multiple folders containing the same main content.
For example:
10 folders containing separate episodes of a TV show season.
Place all the folders in a main folder named for the TV show inside with the folders add the bat file or copy the bat file to C:/Windows/ and call it from a command window from any location.
you could call it Extractfiles.bat or EEF.bat or whatever you fancy...
When calling it from a command window: hold shift & right click inside the folder to open a command window there, then simply only type just the name of the bat file you put in C:/Windows/ (Extractfiles or EEF) no need to add the .bat extension Puting the file in C:/Windows/ makes it recognized as an internal command.