ailette

(from the article `military technology`) ...this reason, the breastplate was followed shortly by the backplate. From the late 13th century, plate protection spread from the knees and elbows ...
Found on http://www.britannica.com/eb/a-z/a/32

Ailette

• (n.) A small square shield, formerly worn on the shoulders of knights, -- being the prototype of the modern epaulet.
Found on http://thinkexist.com/dictionary/meaning/ailette/

Ailette

AiĀ·lette noun [ French ailette , dim. of aile wing, Latin ala .] A small square shield, formerly worn on the shoulders of knights, -- being the prototype of the modern epaulet. Fairholt.
Found on http://www.encyclo.co.uk/webster/A/47

Ailette

In heraldry, an ailette (or emerass) is a small escutcheon which was fixed to the shoulders of armed knights. They were made of steel and introduced during the reign of Edward I, forming the origin of the modern epaulette.
Found on http://www.probertencyclopaedia.com/browse/UA.HTM

ailette

plate of armour worn on shoulder
Found on http://phrontistery.info/a.html
No exact match found