World War II Propaganda Poster, 1943, Forest Service Poster, "Our Carelessness - Their Secret Weapon," showing Hitler and Tojo, Size: 21 7/8 x 28 in./55.5 x 71 cm U.S. Government Printing Office, Washington D.C. During World War II, the US Department of Agriculture was especially concerned with conserving the nation's forests. Posters like this were widespread, outlining the trajectory of how a mistake at home ultimately leads to the weakening of our country, thereby aiding the enemy.