Re: Overalls in the field?
The one thing to remember is that overalls went OVER ALL your clothing, so it was something to wear while working in a field or something more along the lines of physical labor.
That being said, I've seen reference to overalls being issued to CS troops, I believe it is in "Cadet Gray and Butternut Brown" among a few other sources, although those notes are buried under Chickamauga, Stone's River and 6th Mississippi regimental research.
Just another self proclaimed expert,
Fort Gaines (Authentic Garrison Event) 21st Alabama- January 25-27
Vicksburg Living History May 3-5
150th Battle of Chickamauga Army of Tennessee Adjunct