Flyboys Font

Flyboys is a 2006 war drama film set during World War I, directed by Tony Bill. The screenplay is about the adventures of the Lafayette Escadrille, young Americans who volunteered for the French military before the U.S. entered World War I, and became the country's first fighter pilots.

Copperplate Gothic, designed by Frederic W. Goudy in 1901, is probably used for the Fly Boy movie title in the poster. The typeface, known as Gothic, has very small serifs even though it is referred to as sans-serif. You can view more details about it here.