A number of later - built B2 models were equipped with the U.S. - built Liberty engine ; to distinguish these aircraft , they were denoted as the Breguet 14 B2 Ls .
A number of Belgian and American Breguet 14s were outfitted with the Fiat A. 12 engine .
A number of later - built B2 models were equipped with the American - built Liberty engine ; to distinguish these aircraft , they were denoted as the Breguet 14 B2 Ls .
A number of Belgian and American Breguet 14s were outfitted with the Fiat A. 12 engine .