I did a little google search, and this site popped up, related to Louisiana Cavalry Scouts:
There appears to have a section on Louisiana Cavarly Scouts, being part of the UNION Army.
There was a Confederate unit called the Louisiana Scouts and Sharpshooters, a company sized group. It eventually was bleneded into the 14th Confederate Cavalry Regiment (Company H). This from Dr Bergeron's book.
Hopes this helps