Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_16527640_2 (vfl_club_s_ VARCHAR, rank_held_at_time_of_death VARCHAR)

### Question ###
What vfl club(s) for players ranked sergeant, 8th brigade australian field artillery at time of death?

### Accurate SQL ###

SELECT vfl_club_s_ FROM table_16527640_2 WHERE rank_held_at_time_of_death = "Sergeant, 8th Brigade Australian Field Artillery"