Brigade's location (4)

I believe the answer is:

riga

I'm a little stuck... Click here to teach me more about this clue!

'location' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'brigade's' is the wordplay.
'RIGA' is hidden within the letters.
But, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for riga that I've seen before include "Fix a rig up here for the Latvians" , "Latvian capital" , "trading centre in Latvia" , "Capital city of Latvia" , "capital in Europe" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.