It should be noted that during this period, it was the French that began using nationality markings on their aircraft, in the form of roundels that contained the colors of the French flag, the outer ring being red, the middle ring being white, and the center being blue. The British soon followed suit, using the roundel design, just reversing the colors, which made it look more like a target (outer ring blue, middle ring white, center red). The only other markings at that time were individual aircraft numbers.