Can you help me decipher this?

[em79]

  I am desperately in need of some help - I am a self-confessed dunce on army stuff.  I am trying to find any information on my grandad's service in the 2nd World War clues would be good.  I recently was shown my grandad's Army book although it was a replacement.  I shall transcribe the information it contains if anyone could give me clues to what some of it means I will be very grateful.  He died in 1970 before i was born and none of his children know anything.

here goes:

Army Book
Soldiers service and Pay book
Temporary     Previous AB64

Army Number  T/3854162
Surname  KNOWLES
DOB   23-5-1913
POB   Not Given
Trade on Enlistment - Collier
Enlisted - 11-10-1932

Distinctive marsk + minor defects   Age/service Growth - 20c

Defects or history of past illness which should be examined into if called up for service  -     3149 Completed.

Particulars of training - transferred to RHSC in the rank of driver or Dvr i/c part II order x(4) /253/45

Medical classification
29-5-45   catagory B1   
18-10-45 catagory B2   AFW3149  completed

Protective innoculations
TABTT TYPHUS I    6-4-45
TEV (11.5)  II       13-4-45
TEV (11.3)  III      20-5-45

Leave
3-9-45       28 days leave in the UK    LIAP
10-9-45     15/10/45  33D/E + 2VJ

Customs Concession labels
16-8-45  £5

any help will be great no idea who he served with prior to joining the army we believe he lived in manchester and think he served in Burma
Thanks

[harribobs]

i think you've probably mis-read a key abbreviation

RHSC should be RASC

Royal Army Service Corps

he was a driver (or a driver i/c, in charge, ) with the RASC