Rank insignia for U.S. Army Corporal (E-4).
<a href="https://en.wikipedia.org/wiki/User:Braindrain0000" class="extiw" title="w:User:Braindrain0000">Braindrain0000</a>
2006-12-26
Based upon graphic from <a rel="nofollow" class="external text" href="https://web.archive.org/web/20061231145748/http://www.tioh.hqda.pentagon.mil/Rank_page/History_of_Enlisted_Ranks.htm">U.S. Army Institute of Heraldry website</a> as reference for shape and color.