Appears to be legit. The link is from 3/26.
https://www.whs.mil/News/News-Display/Article/2127898/army-north-responds-to-covid-19/
This is legit. Here's the original pdf on an army.mil site. It's not a deployment order but rather an announcement from the public affairs office.
https://www.arnorth.army.mil/Media/releases/Media-Advisory-20-03-002-Army-North-Expands-Response-to-COVID-19.pdf