Having a section in that article is fine, and that might be a good place to add the CAP grade insignia image, but it needed a mention separately.
From the en.wikipedia.org
United States Coast Guard officer rank insignia describes an officer's pay-grade.
From the en.wikipedia.org
Once the precedent of silver outranking gold was set, it was followed when gold bars were later created for second lieutenants, who had no grade-specific insignia until the early 20th century.
From the en.wikipedia.org
His investment with the insignia of the highest grade of the Order of the Star of India appeared to give him much pleasure.
From the en.wikipedia.org
Upon admission into the Royal Victorian Order, members are given various insignia of the organization, each grade being represented by different emblems and robes.
From the en.wikipedia.org
This chart represents the U.S. Army enlisted rank insignia with seniority increasing left-to-right inside a given pay grade.
From the en.wikipedia.org
From 1941 until 1946, the rank was equivalent to grade 2, ranking with Gunnery Sergeant and other technical ranks with which it shared its insignia.
From the en.wikipedia.org
General-grade officers and the Commandant of the Marine Corps are authorized a personal flag, which displays their rank insignia.