1836 battle site (5)
I believe the answer is:
alamo
'1836 battle site' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alamo that I've seen before include "Texan battle" , "Famous battle in Texas and John Wayne film" , "1836 massacre at a San Antonio, Texas mission" , "The red planet" , "historical Franciscan mission" .)