Read the bio below and try to give details on john walker -lrb- raf officer -rrb- 's:    - placeofburial label     - allegiance       - awards     - serviceyears     - birth date     - name     - branch     - rank     Bio: air marshal sir john robert walker kcb cbe afc -lrb- born 26 may 1936 -rrb- is a former chief of defence intelligence .
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- placeofburial label is place of burial- allegiance is united kingdom- awards is knight of the order of the british empire air force cross commander of the order of the bath commander- serviceyears is 1956 & ndash ; 1995- birth date is 26 may 1936- name is sir john walker- branch is united kingdom- rank is air marshal