some uniforms of my AU-Navy (even if my AU-country have joint forces and no service branches):
A-Uniform = Dress Uniform
B-Uniform = Service Uniform (the white cover on the head dress is worn from april to september)
C-Uniform = Combat Uniform (either a "dixie cup" hat (sailors) / peaked hat (officers) or a beret is worn as head dress)
D-Uniform = Working Uniform