Battle to get article by the French doctor (5)
I believe the answer is:
Here is my best explanation:
'battle' is the definition.
(famous mission and siege from the Texas revolution)
'article by the french doctor' is the subsidiary indication.
'article' becomes 'a' (example of the part-of-speech).
'by' is a charade indicator (letters next to each other).
'the french' becomes 'la'.
'doctor' becomes 'mo' (**).
'to get' is the link.
(Other definitions for alamo that I've seen before include "don't forget it!", "Famous Texan fortress", "Where Davy Crockett met his end", "Mission building in Texas, site of famous siege by Mexico", "national monument", "Site of 1836 massacre in Texas", "The --, historic mission in Texas", "Besieged Texas mission, 1836", "Texas mission taken by Mexican forces in 1836" and "Davy Crockett's last stand".)