An article on the Defense Department website devoted to Jackie Robinson¡¯s military career disappeared and then reappeared, joining a series of government webpages on Black figures that have vanished under the Trump administration¡¯s efforts to purge government websites of references to diversity and inclusion.

The brief biography describes Robinson¡¯s childhood in California, his time in a segregated Army unit during World War II and his role in breaking baseball¡¯s color barrier.

But for much of Wednesday, the Pentagon website displayed a ¡°Page Not Found¡± message in place of the article. When the biography reappeared Wednesday afternoon, there were no notable changes.