Flying through a MATZ

[and the chap said]

G'day folks,

I'm a little confused about what to do when flying through a MATZ. Trevor Thom Air Law(1998 edition) says :
"When penetrating a Military Air Traffic Zone (MATZ), the pilot will normally be given the Aerodrome QNH to enable vertical seperation between a/c. If there is more than one aerodrome in a combined....blah blah blah... clutch QNH".

However, the PPL Confuser states quite clearly that QFE must be set. It says this twice. The Confuser is confusing me!
Which do I believe or are there different rules for different situations and I'm missing the point?

Any advice from those wiser than me (so that's pretty much everyone, I guess) is much appreciated.

Thanks,
ATCS

[This message has been edited by and the chap said (edited 07 February 2001).]