Red Identification Numbers from 1 through 18 in three sizes. Each sheet has 1 each of the medium and large numbers, 2 each of the small numbers. There are 2 decal sheets in each package.

Entente identification numbers could be in white, black, or red. French and American squadrons placed numbers on the side of the fuselage, behind the cockpit or near the tail. The French might put the number on top of the fuselage, just behind the cockpit. Americans on the top wing, typically on the right side. British pusher planes with numbers would have them on the front fuselage sides, sometimes repeated on the top wing. Other squadrons would place numbers in these locations or where letters were normally placed. Central Powers pilots would sometimes paint a number in any color as a personal marking.