Unity of Command II - a suggestion for the developers

This is a short clip from the game 'Unity of Command II', demonstrating what I consider to be an interface glitch.


The 'deploy step' button used here suggests in this case that there are three types of unit available; but none of them can actually be deployed (as indicated by the orange message and 'beep' noise). I suggest that it would be better, in such instances, to have those unit types greyed out so that they cannot be selected in the first place.

Unity of Command II,Interface,