At various times and places Confederate soldiers were issued "hickory shirts."  The time preceeding the Battle of Franklin was one of them.  Hickory shirts were made from heavy twilled cotton, usually with a narrow blue and white stripe pattern, and were a common workman's shirt in the mid 19th century (so they are appropriate for lots of impressions).  With the help of Ben Tart and Family Heirloom Weavers we have reproduced a sample of wartime hickory that matches perfectly down to the correct return selvedge.  The hickory shirts for Franklin are available in size regular (up to a 42) or large (up to a 48).