How do the Cadets of temperance training affect Tom at first then later?

Over vacation, Tom joins a "new" band of boys called the "Cadets of Temperance," known for their showy regalia and red sashes. He vows not to drink or swear, but learns that "to promise not to do a thing is the surest way to makes a body want to go and do that very thing." Unable to abstain from these vices, Tom goes back to his mischievous ways.