These are regimental uniforms of the Royal Pomni Army mostly dedicated to the Seven Years War as they were contesting against the Jaxxians in Central Bellum and had new adversaries which were known Kingers and Gangles after they've just established their own countries.
Each different uniforms belongs to a special form of regiment that deployed through different areas of the Warfare that spreads along, Apparel is required during skirmishes and formal battles between Opponents, this displays the style of the war that goes on as the Renaissance.