He said in his guidance: "Our unity and purpose are instrumental to meeting the Department’s warfighting mission. Efforts to divide the force — to put one group ahead of another — erode camaraderie and threaten mission execution."
He added:
Going forward, DoD Components and Military Departments will not use official resources, to include man-hours, to host celebrations or events related to cultural awareness months, including National African American/Black History Month, Women’s History Month, Asian American and Pacific Islander Heritage Month, National Hispanic Heritage Month, National Disability Employment Awareness Month, and National American Indian Heritage Month. Service members and civilians remain permitted to attend these events in an unofficial capacity outside of duty hours.
He said that military installations, units, and offices are still encouraged to "celebrate the valor and success of military heroes of all races, genders, and backgrounds as we restore our warrior culture and ethos."