Peter makes his father proud by signing up. Billy however is revealed to be only fifteen and is grounded before being returned to America. Hymie takes Rosie to say goodbye to him but accidentally lets slip that Billy is under-age though Rosie tells Elmer she knew all along. Vi believes she is pregnant and Major Kiley ends up wounded in Helen's hospital after undertaking a mission with Mac. Mac and Sally's happiness is interrupted when an embittered Ruby turns up to say that Stanley has definitely been killed this time and accusing them of driving him to his death.