Navy Uses All Caps To End All Caps

When I was a child, a friend of mine showed me an Army typewriter, which typed in all capital letters.  The tradition goes back to the 1850s, when teletype machines used only capitals.  Now the Navy has become the first branch of the military to dispense with the tradition.  Of course, it used all caps to announce Navy personnel are   

AUTHORIZED TO USE STANDARD, MIXED-CASE CHARACTERS IN THE BODY OF NAVY ORGANIZATIONAL MESSAGES 

As someone I know who spent time in the Navy remarked, “There’s the right way, the wrong way, and the Navy way.”