2019 March 18, Steven Pifer,Five years after Crimea’s illegal annexation, the issue is no closer to resolution[1], The Center for International Security and Cooperation:
The little green men were clearly professional soldiers by their bearing, carried Russian weapons, and wore Russian combat fatigues, but they had no identifyinginsignia. Vladimir Putin originally denied they were Russian soldiers; that April, he confirmed they were.
The former Protector tendered him the oaths, and presented him with theinsignia of office, performing the ceremonies of installation.
2021,Tracy Borman,Crown and Sceptre: A New History of the British Monarchy, from William the Conqueror to Elizabeth II, Grove Atlantic,→ISBN, page 4:
The most sacred part of the ceremony followed when the new king was anointed with holy oil to confirm his semi-divine status. He was then invested with the royalinsignia: the ring, sword, crown, sceptre and rod. Finally, the newly crowned monarch received the homage of his leading subjects.
(figurative) A mark or token by which anything is known.
But if autumn wear theinsignia of nature's royalty, its purple and gold, in only the shaded lane or the green field with its one or two old trees, what is its more than eastern pomp in a wooded empire like the New Forest!
2006, P. Goodrich,The Laws of Love: A Brief Historical and Practical Manual, page49:
Rule 23: “The stress of love makes it hard to eat and sleep.” To these empirical laws we can add the various otherinsignia of love.
Insignia originated in Latin as the plural ofīnsīgne, but in English it had begun to be used as a singular by the 18th century (as in "an insignia...", "the insignia is..."). This is now standard; the use ofinsigne is now uncommon.[1][2][3]