Different Factions (1984-1992)
In 1984, LEGO released the first Castle sets that had more realistic castles, knights, and colors (such as gray castles rather than yellow) that more accurately depicted the Middle Ages compared to the Classic Castle sets from the late 1970s and early 1980s.
The 1984 castle sets featured many newly introduced pieces and weapons. Examples are: one-piece horse, horse saddles, new knight helmets with fixed visors, feather plumes (there were three types in five colors: red, blue, yellow, white and black), waving flags and bows and arrows. Many of these new pieces would be included in future castle sets. The 1990 castle sets brought a further changes - as knights now had armor breastplates and helmets with movable visors.
Read more about this topic: Lego Castle Models