Garnish, as in to decorate . Mostly used now in reference to food preparation.  It does however hearken back to old French where it meant to warn a town of impending attack.

Once a town was given a “garnish” it would start to prepare for the battle by “dressing” the fortifications with banners and soldiers.

Medieval chefs, if their side was victorious, would later cook a feast where a cake or some such desert that resembled a castle was the centerpiece. This “cake” would be decorated with the banners and flags of the town and even little soldiers and such to show that the town was standing “garnished”. The term would eventually just stay in the kitchen and away from the battlefield.