Does the guy retain his accumulated pension rights on dismissal?
Almost certainly - it just about takes High Treason to lose those (contrary to what many think).
One shared an office once with one of the RAF's top P1 gurus, who had spent most of his career in that specialisation, had never known a forfeited pension (once IPP had passed of course).
Naturally the conversation began - er - below the belt one might say - concerning a pulchritudinous PA in an adjacent office. Taking her roughly (consensually of course) across the photocopier would result in instant dismissal, but NOT loss of pension.........