Does embezzlement from a General/Limited Partnership's bank account count as illegal?

Embezzlement by definition is a crime: it is taking property of another which is lawfully in your control, and converting it to your own use or the use of another. The maximum penalties for embezzlement vary depending on the jurisdiction. The ultimate penalty to be imposed is up to the court, and it considers many factors, most of which are set by statute, and some by prior appellate decisions. I am concerned, though, about the purpose of your question. Are you a person injured by the wrongful taking? Are you a member of the partnership? Are you someone with a grudge against someone else who wants to take some kind of revenge? If you have real knowledge of a real crime, you should notify law enforcement. But since an investigation can cost someone lots of money and peace of mind, you should only notify the authorities if you have real facts to back up your suspicions.