Cigarette card from the Bulgaria Sport cigarette factory, image 3 from the Der Weltkrieg 1914 (The World War 1914) series. The card features a color photograph depicting the announcement of the threat to Germany and mobilization to war July 31, 1914. Cigarette cards were trading cards issued by tobacco manufacturers between 1875 and the 1940s. Albums with text, but not images, were published and the collectors added the picture cards to complete the book. They became popular in Germany during the 1920s and continued to grow in popularity with the rise of the Nazi regime. This series features the causes and outbreak of World War I.