More than 50 serving members of the NSW Police force are facing criminal charges for a host of offences including child rape, highlighting the bad behaviour that goes on behind badges across the state.

One officer who was suspended in February faces "historic" charges of aggravated indecent assault, an act of indecency, two counts of inciting an act of indecency, aggravated sexual intercourse without consent and three counts of sexual intercourse with a child.