@echo off
IF (%1)==(echo) echo on
IF (%1)==(/?) (
 echo Creates randomly named folders.
 echo If you enter senseless numbers, nobody knows what happens...
 echo [echo] batch echo on
 goto return
)


:anfang
IF (%2)==() (
 echo How many folders?
 set /P folders=
 echo How deep the structure?
 set /P tiefe=
) ELSE (
 echo recursive start
 set folders=%1
 set tiefe=%2
)

echo %folders% %tiefe%

set /a tiefe=%tiefe%-1
FOR /L %%n IN (1,1,%folders%) DO call :create %tiefe%

goto return
REM #################

:create
 set ctiefe=%1
 call :random
 if NOT (%ctiefe%)==(0) call :anfang %folders% %ctiefe%    
 cd ..
goto return

:random
set rand=%random%
md %rand%
cd %rand%
goto return

:end
pause
:return