USAAFの各部隊の記章だそうだ
https://forum.il2sturmovik.com/topic/168-developer-diary/?do=findComment&;comment=692637
https://forum.il2sturmovik.com/uploads/monthly_2018_11/Units_Large_Graphic_Background.png.59ab067b8c1f3f451b792b8d1b24119e.png
個性的で面白い