President Donald Trump's administration launched a crackdown on DEI programs after taking office last month, and Defense Secretary Pete Hegseth has said diversity promotion efforts are "not core to our mission" and will be scrapped.

The memo from Sean Parnell -- which was dated Wednesday -- said "DEI content includes but is not limited to information that promotes programs, concepts or materials about critical race theory, gender ideology, and preferential treatment or quotas based upon sex, race or ethnicity."

"Content requiring removal also includes that which is counter to merit-based or color-blind policies... or promotes cultural awareness months," the memo said.

The day before the start of Black History Month -- which is observed in February -- Hegseth issued guidance prohibiting Pentagon resources from being used to mark months celebrating people of different ethnic backgrounds, describing doing so as divisive to the military.

"All articles, photos, and videos removed from (Defense Department) websites and social media platforms must be archived and retained in accordance with applicable records management policies," Parnell's memo said.