Lead: For 400 years service men and women have fought to carve out and defend freedom and the civilization we know as America. This series on A Moment in Time is devoted to the memory of those warriors, whose sacrifice gave, in the words of Lincoln at Gettysburg, the last full measure.

Content: Among his contemporaries John Barry was known as the "Father of the American Navy," but even today his name is not well known. Barry was Catholic and an Irishman and in 19th century America those things tended to diminish the value of a leader’s accomplishments. Nevertheless, Barry must be ranked among those who established the skills, reputation and fierceness of the tiny American Navy that faced almost insurmountable odds in its fight with the greatest Navy in the world during the Revolution.