Why is "15th (Northwest) Arkansas Infantry Regiment" trending?

Wikipedia Overview

The 15th Arkansas Infantry Regiment, also known as the "Northwest regiment", was an infantry formation of the Confederate States Army during the American Civil War. It was originally formed as the 3rd Arkansas Infantry Battalion. After receiving the requisite ten companies, the battalion was redesignated as the 21st Arkansas Infantry Regiment. Upon discovery that there was already another "21st Arkansas," the Northwest Regiment was again redesignated as the 15th Arkansas Infantry Regiment. This was the third Arkansas regiment to bear the designation "15th Arkansas." The others are Johnson's and Josey's Arkansas infantry regiments. Members of the Northwest Regiment fought both west and east of the Mississippi River before participating in the Vicksburg campaign, surrendering at Vicksburg in July 1863. After being paroled and exchanged, the regiment was consolidated with other state units to form the 1st Consolidated Arkansas Infantry Regiment.