How can I make the icon for Battle-Honor rewards visually appear on the campaign map and in the background of mission buttons?

I’m creating my own campaign. I know how to modify the mission’s `.XML` files to grant Battle-Honors upon completion, so players can see which missions offer rewards Battle-Honors in the "Current Day’s Report" on the campaign map, and also see the awarded Battle-Honors in the post-mission results screen.

However, I have no idea how to visually indicate missions with Battle-Honors rewards directly on the campaign map within an Operation, just like how missions with "Intelligence" rewards are clearly shown on the map in Tour of Duty campaigns.