The phrase refers to a highly regarded series of Polish military reference books co-authored by Henryk Wielecki and Rudolf Sieradzki .
2. Wojsko Polskie 1921-1939: Organizacja i odznaki artylerii Henryk Wielecki and Rudolf Sieradzki Published: 1994 (Wydawnictwo Ajaks) Focus: Detailed breakdown of Polish artillery units. Wojsko Polskie 1921-1939. Organizacja i odznaki...
They provide the exact criteria, dates of introduction, and physical descriptions needed to authenticate real badges and spot replicas. The phrase refers to a highly regarded series