I own both Blu-ray and Dvd version of this movie and there is a difference between the two.
Without giving away too much I will simply say that some scenes are missing out of the DVD version. Once they are inserted the scenes seem to make more sense.
This movie should be viewed under an R rating due to some partial nudity in some areas and rough language may be troublesome. One would need to keep in mind that there will be ruthless war scenes that took place back in those days and they are well represented and is not for the faint of heart.