The organization behind the lawsuit against Harvard University that led to the demise of affirmative action in college admissions has filed a new lawsuit against the United States Naval Academy seeking to end race-conscious admissions there.

The lawsuit by Students for Fair Admissions is the second the group has filed against a military academy within the past month after it sued West Point Military Academy last month. The group was the driving force behind a lawsuit that led to a landmark Supreme Court ruling this summer that prohibited colleges from considering an applicant’s race in college admissions.

But the court’s ruling did not apply to military academies, as Chief Justice John Roberts wrote in his majority opinion that the military academies posed separate issues that could not be addressed in the Harvard case.

“No military academy is a party to these cases, however, and none of the courts below addressed the propriety of race-based admissions systems in that context,” a footnote in the decision read. “This opinion also does not address the issue, in light of the potentially distinct interests that military academies may present.”