Hi Karmen,
I'd also be interested in learning more about discipline during WW II, as I believe it had evolved to become less harsh since its origins in the 1800's and into WW I. Hopefully some with some relevant military experience can tell us more. Here is a page with info on the various levels of discipline in 1914:
http://www.bbc.co.uk/dna/h2g2/A944363
That probably provides a broad guide to the types of punishments administered, though the details of fines etc. obviously would have changed by 1944. Most of those terms still appear in the records of WW II soldiers. I had always assumed field punishment included lots of marching about in full kit, cleaning and polishing and other menial and physical tasks. It's possible that underestimates its harshness. I do not know if it would have still included being shackled, etc during this period.