Army Secretary Dan Driscoll is leaving his position after 18 months. The White House made this announcement on Monday. Further details about his departure are available from the source.

The announcement confirms Driscoll's tenure as Army Secretary was relatively short, lasting a year and a half. The White House confirmed Driscoll's decision to step down, but additional information about the circumstances surrounding his departure is not provided here. Readers can refer to the original source for more information.