In form (1), where an injury does not amount to grievous bodily harm, intent to cause grievous bodily harm (in the advancement of a different cause) must be shown.
The intention either to cause or to resist arrest must be proved subjectively, say, in the charge malicious wounding with intent to cause grievous bodily harm.
One youth pleaded guilty to inflicting grievous bodily harm and was sentenced to two years probation; his accomplices were not formally identified or charged.
He pled guilty to one charge of recklessly inflicting grievous bodily harm, the victim suffered fractures to his jaw, eye socket, hard palate, cheek bone and nose.