Microsoft Sells U.S. Defense Dept. On Windows 10
blogs.wsj.com
blogs.wsj.com
Plus the Enterprise LTSB branch is almost DESIGNED for the DoD (in fact I'd put money on governments being the primary target for even having a LTSB branch).
A lot of the complaints/criticism of Windows 10 doesn't apply to the LTSB as it has most of Microsoft's services stripped out from the get-go.
[0] https://blogs.windows.com/business/2014/10/22/windows-10-sec...
[1] https://technet.microsoft.com/en-us/library/mt601297(v=vs.85...