There are two versions of World at War that are available on Blu-ray. One that has been converted from the original 4:3 ratio to the now more common 16:9 ratio this has been done by a combination of clipping the original and/or panning and scanning. Whether you like this or not is a personal choice , personally I feel that if a TV series as old as this is still considered significant enough to be transferred to more modern media it should be respected enough to be left alone. This is the version that has been converted to 16:9.
My biggest problem though is with the audio , there are clearly elements to this new 5.1 soundtrack that has been added in the studio and would not have been on the video it accompanies.
The overwhelming majority of the footage taken in the field , or in the street, during WW2 would have been silent. Instead they have added the sounds of horses hooves on roads or truck engines , as appropriate, or most distractingly for me the sounds of peoples voices or snatches of song ( this during the street footage taken during the VE day celebrations in London ). This I do have a problem with.
The other Blu-Ray restoration ( known I believe as the 'Complete' version , rather than this the 'Ultimate' version ) includes the original soundtrack and the "restored 5.1" and retains I believe the original 4:3 picture (this picture has seen some digital restoration). It's a pity this isn't the version that is available here.
The series deserves more than 3 stars , but that audio really bothers me. Also the 'Ultimate' version is supposed to have 9 discs , CP's description says it has 9 discs but they only send out 8 ? Don't know why.