I'll look for the reference.
Having established my ignorance of the subject, I want to mention one discussion. I met a group of reinactors from a group in Georgia called the "Appling Grays" They were making a demonstration of a Confederate camp at school. These guys definitely knew their history.
During the conversation, I mentioned that I had ancestors in the First Florida, 18th Alabama, and another Florida outfit called "Laird's Rangers". I told them that I suspected the First Florida may not have seen much action, and was told that to the contrary, they were in nearly every major battle.
One of them told me that Lee considered the First Florida as shock troops. Maybe he was just being generous but would like to know the facts.