Complex sentence: Ross introduces Palmer to Dalby as as a good man but insubordinate; his file records that he had been court-martialed for black market activities but offered a job as a spy as an alternative to jail.
Split into simpler sentences: Ross introduces Palmer to Dalby as as a good man but insubordinate. His file records that he had been court-martialed for black market activities but offered a job as a spy as an alternative to jail.