Q:

Loop through files in subdirectories batch file

I am trying to loop through a bunch of files in sub-directories to run a command on them, but I can't seem to figure out how to reach them. 
The directory structure is like this:

Main directory (Holds .bat file and top-level directories)

Sub-directory

Search directory

A bunch of files (I need the locations of all of these separately)

I am able to get a list of all of the files/folders in the "Main directory" using:
for /f %%f in ('dir /b /r *') do echo %%f

but I cannot seem to figure out how to go any further into the directories to get the files in the "Search" directory. 
An example of the file structure is:
C:\Users\swiftsly\Search160\0002\search\AP584.txt

Any help is greatly appreciated! 

A:

The final solution to this question, with the help of the recommendation by Squashman to use /R instead of /f is:
@echo off    
for /R %%f in (*.txt) do echo %%f

This will print out a list of all of the .txt files in the sub-directories.