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21 Corps Patch. US Army
Casual:

военная жандармерия

Staff battalion Honour Guard (Godasardzes) company qualification sign - "For strength", silver /Latvian National Armed Forces/

51st Infantry regiment
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Description
On a blue four-leaf clover two crossed arrows in white, points up, superimposed thereon a red acorn fimbriated white all on a 2 3/4 inches (6.99cm) square Army Green background.
Symbolism
The crossed arrows are representative of the fighting power of the organization, the acorn is indicative of strength, and the four-leaf clover represents good fortune.
Background
The shoulder sleeve insignia was originally approved for the XXI Army Corps on 3 Apr 1944. It was redesignated for the XXI U. S. Army Corps, Army Reserve on 11 Oct 1957and on 4 Nov 1957 it was amended to delete the words "Army Reserve." The insignia was amended on 28 May 1959 to change the background color from olive drab to Army Green. A distinctive unit insignia was not approved for the XXI U. S. Army Corps. (TIOH Drawing Number A-1-270)
On a blue four-leaf clover two crossed arrows in white, points up, superimposed thereon a red acorn fimbriated white all on a 2 3/4 inches (6.99cm) square Army Green background.
Symbolism
The crossed arrows are representative of the fighting power of the organization, the acorn is indicative of strength, and the four-leaf clover represents good fortune.
Background
The shoulder sleeve insignia was originally approved for the XXI Army Corps on 3 Apr 1944. It was redesignated for the XXI U. S. Army Corps, Army Reserve on 11 Oct 1957and on 4 Nov 1957 it was amended to delete the words "Army Reserve." The insignia was amended on 28 May 1959 to change the background color from olive drab to Army Green. A distinctive unit insignia was not approved for the XXI U. S. Army Corps. (TIOH Drawing Number A-1-270)
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