why don't the defence forces like given names?

Our defence forces seem quite keen to provide plaques for their deceased comrades, but why do they record only the initials of the deceased and not their full given names? Here's a typical example:

http://www.chapelhill.homeip.net/FamilyHistory/Photos/Marburg_Trinity_Lutheran/index.php?image=182_8210.JPG

Is it just me that thinks it odd that we are not told B.J.'s name, but we are told the name of his wife, the name of his children, his rank and his service number etc?