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_50091 ( "Name" text, "Branch" text, "Term began" text, "Term ended" text, "Time in office" text )

### Question ###
When did the term end for the U.S. Marine Corps?

### Accurate SQL ###

SELECT "Term ended" FROM table_50091 WHERE "Branch" = 'u.s. marine corps'