Bushnell aside, the US military is fucking ridiculous with this shit. (I say that as a veteran myself, unfortunately. Dumb decisions as a kid.)
Wearing your uniform to engage in imperialism and murder around the globe? APPROVED, GOOD JOB SOLDIER
Wearing your uniform to say maybe let's not kill people? TOO POLITICAL
KDE Connect should fit the bill; despite the name, you don't need to be using KDE (or Linux even) since there are clients for every major OS, even mobile.
Among many other cool features, it lets you easily and simply just send a file from one device directly to another on your local network. I use it all the time to send photos from my phone to my desktop without plugging anything in, for example.