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_1015521_2 ( rank_in_english VARCHAR, commonwealth_equivalent VARCHAR )

### Question ###
Give me a list of all spanish officer titles that could receive recognition as group captain in english

### Accurate SQL ###

SELECT rank_in_english FROM table_1015521_2 WHERE commonwealth_equivalent = "Group Captain"