In 1924 (2 October) "personal" or "service" categories were introduced, from K1 (section leader, assistant squad leader, senior rifleman, etc.) to K14 (field commander, army commander, military district commander, army commissar and equivalent). Service category insignia again consisted of triangles, squares and rhombuses, but also rectangles (1 – 3, for categories from K7 to K9).
In 1924 (2 October) "personal" or "service" categories were introduced, from K1 (section leader, assistant squad leader, senior rifleman etc.) to K14 (field commander, army commander, military district commander, army commissar and equivalent). Service category insignia again consisted of triangles squares and rhombuses, but also rectangles (1 – 3, for categories from K7 to K9)