@echo off

:: sample usage
call:getMMDDYYYY _DATE
echo _DATE: %_DATE%

goto:eof

:: -----------------------------------------------------------------------------
:: The "function"
:: -----------------------------------------------------------------------------

:getMMDDYYYY
setlocal
for /f "tokens=1* " %%A in ('date /t') do set _cdate=%%B
for /f "tokens=1,2 eol=/ delims=/ " %%A in ('date /t') do set _mm=%%B
for /f "tokens=1,2 eol=/ delims=/" %%A in ('echo %_cdate%') do set _dd=%%B
for /f "tokens=2,3 delims=/ " %%A in ('echo %_cdate%') do set _yyyy=%%B
( endlocal
    set %~1=%_mm%%_dd%%_yyyy%
)
goto:eof