LawDog,
To your first question, close, but not quite. A person can only be
charged with a crime if his actions cause harm to another's person or property. If the mode of his crime is giving aid and comfort to the enemy, etc, then yes, his crime would be treason. I'm sure you realize what it would lead to if doing anything that
might harm another person was a crime.
Second, yes, actions that involve theft or property damage. An item purchased via tax revenue is, for all intents and purposes, owned by the community at large (I'll skip the rant about taxation being evil for now
.) If someone steals or damages community-owned property, then they have indeed committed a real crime.
As for services, well, I'm not sure how you would steal or damage a service that has been paid for thru tax revenue.
Later,
Chris