Lie about soldier being promoted for a major job (3,3)

'a major job' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'lie about soldier being promoted' is the wordplay.
'lie' becomes 'bask' (to bask in something is to lie in it).
'about' indicates putting letters inside.
'soldier' becomes 'GI' (GI can mean a US soldier).
'being promoted' says the letters should be written backwards (going up, in a down clue).
'gi' reversed gives 'ig'.
'bask' going around 'ig' is 'BIG ASK'.

'for' is the link.

Can you help me to learn more?