You learn how to prosecute criminals and investigate crimes. You have been shown tactical principles, radio codes and how to ensure your own safety. You know the laws. You have been provided with the tools necessary to succeed and the training to use them. And then your experience to polish it all ...
But have you trained for a lifetime commitment with someone?
Marriage is difficult. To merge two people into one life requires commitment, humility and communication. Most couples do not receive training to complete a marriage. So there is a lot of improvisation, trial-error and all too often injuries.
As an agent of peace, what you are tending to pour into other roles while you are not in office and some aspects of your work complicates your relationships at home. "Marriage in progress" contains strategic and tactical principles for good relations as an agent of peace.