For actual classified applications, the NSA (which provides solutions downstream to DoD and other groups) is already trying to standardize on a highly customized version of Windows CE built by General Dynamics that runs on XScale processors with NSA specific modifications. Some publicly visible applications of this stack are the Sectera Edge (the phone that replaced Obamas Blackberry) and the DTD2000.
Windows CE will become the very dominant winner in the mobile platform space because of this. :)
What I would be surprised about is whether it's usable without needing 7 different contractor apps installed, or less than 3 years behind the times.
What they typically do is write the specs to an existing product sometimes it is laughable really, you can tell exactly the product they mean without them actually mentioning its name. That is one way to put out bids that on paper look open and not tied to a particular vendor but in practice they are.
The other way is to do a pie in the sky kind of write-up. We want something that does everything and we're requesting quotes for it. That is silly as well.
And I was under the impression that Apps 4 Army was built for iOS first. Does that mean iOS will now 'win' ?