In French, the « cavalier » (literally rider, horseman, see Cavalry) is an artificial hill behind the walls that allows to see the enemy above the walls.
orthographic projection | projection | Mercator projection | Space-oblique Mercator projection | Psychological projection | Isometric projection | Astral Projection | Projection screen | Map projection | map projection | Lambert conformal conic projection | Goode homolosine projection | astral projection | Time projection chamber | Superior oblique myokymia | Robinson projection | Projection-valued measure | Projection booth | power projection | Perspective projection distortion | Miller cylindrical projection | isometric projection | Graphical projection | Gall–Peters projection | Astral projection | 3D projection |