Army Secretary Dan Driscoll is resigning from his position after 18 months. The White House made this announcement on Monday.

Further details about his resignation are available. The White House has confirmed that Driscoll is stepping down, but additional information can be found through other sources.

The duration of Driscoll's tenure as Army Secretary was 18 months, ending with his resignation. For more information on this development, readers can refer to the original announcement.