In a 43 - day campaign from December 1, 1940, through January 12, 1941, about 50,000 publishers in the United States distributed almost eight million booklets during what was called the “Courage ” Testimony Period.
طی جنگ جهانی دوّم نیز شاهدان یَهُوَه علی‌رغم آزار و اذیت با شجاعت به موعظهٔ خود ادامه دادند .‏