The evolution of heraldic helmet shaped followed the evolution of helmet design, especially jousting helmets, from the 14th to 16th centuries. The armorials of the second half of the 13th century do not include helmets. Helmets are shown as integral part of coats of in the first half of the 14th century (Codex Manesse, Zürich armorial). These helmets are still of the "great helm" type, without movable visor. Heraldic helmets become diversified with the development of dedicated jousting armour during the 15th and 16th century. The development is halted with the abandonment of jousting as a courtly practice, in the early years of the 17th century. From that period, the various types of heraldic helmet are purely driven by convention, and no longer tied to improvements or fashions in armoury.
The practice of indicating rank through the display of barred or open-face helmets appears around 1615.
As jousting with lances was supplanted by tourneying with maces, the object being to knock the opponent's crest off his helmet, the fully enclosed helmet gave way to helmets with enlarged visual openings with only a few bars to protect the face. These barred helmets were restricted by the imperial chancellery in Vienna to the nobility and certain doctors of law or theology, while the jousting helm was freely adopted by anyone.
The direction a helmet faces and the number of bars on the grille have been ascribed special significance in later manuals, but this is not a period A king's helmet, a golden helmet shown affronté with the visor raised, crowned with a royal crown, became adopted by the kings of Prussia.
Historicallygranted in an achievement of arms, but was naturally assumed by appropriate rank as a matter of "inherent right", so a helmet with torse and mantling would not be misplaced even above a shield which had no crest to place above it. When multiple crests need to be depicted, the convention in English heraldry is to draw the crests above a single helmet, each being separated from it, while in German heraldry, where multiple crests appear frequently after the 16th century, each crest is always treated as inseparable from its own helmet and turned in agreement with the helmet.
, the helmet was not specifically
In continental Europe, multiple helmets were usually turned inward, with the center helm (if an odd number) turned affronté; while in Scandinavian heraldry the helmets were usually turned outward.
Heraldic combinations were driven to extremes in the 18th century, e.g. the arms of the last margraves of Brandenburg-Ansbach (Charles Alexander, Margrave of Brandenburg-Ansbach, r. 1737–1791) consist of a shield with 21 quarterings topped with a record thirteen helmets and crests.