Neither of these regiments was really Polish. While they contained some Polish members, they were largely composed of other ethnic groups. You should begin with my book "Guide to Louisiana Confederate Military Units, 1861-1865" (LSU Press, 1989) and the printed sources in the bibliographies for each regiment. You will also find good information in Terry L. Jones' "Lee's Tigers," which is a history of the Louisiana regiments in the Army of Northern Virginia.