This is a World War II-era, US Army, 21st Corps patch.  It is square (well, almost) measuring 2-5/8" x 2-11/16".  The patch is embroidered onto khaki twill fabric.  It has cut edges and a slight white back.  The image on the patch is a dark blue, 4-leaf clover containing white, crossed arrows (2) under a red acorn.  The background is an olive green color thread.  The patch is in nice condition.

The 21st Corps served in Rhineland and Central Europe during World War II.

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