King Edward pocketing American bill went on campaign (8)

I believe the answer is:

crusaded

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'went on campaign' is the definition.
The answer and definition can be both related to competing as well as being past participle verbs.
Maybe there's a link between them I don't understand?

'king edward pocketing american bill' is the wordplay.
'king' becomes 'CR' (short for Carolus Rex, King Charles in Latin).
'edward' becomes 'Ed' (short for Edward).
'pocketing' indicates putting letters inside (pocket can mean to steal or take possession of).
'american' becomes 'US' (United States).
'bill' becomes 'ad' (advertisement stuck on wall).
'cr'+'ed'='cred'
'us'+'ad'='usad'
'cred' placed around 'usad' is 'CRUSADED'.

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