Olive drab (officially called Olive Drab #3) was the color chosen by the U. S. military for uniforms and military vehicles during World War II. It is mentioned in Summer of My German Soldier when the trucks pass through Jenkinsville carrying the German prisoners-of-war. Olive drab is slightly greener than the tradition olive color, and it was probably chosen to serve as a type of camouflage in the European countryside. Olive Drab #3 was later replaced by the darker Olive Drab #7 in 1944 and remained the official color for combat uniforms through the Vietnam War. Solid color olive drab has since been replaced by multi-pattern olive drab uniforms for better camouflage protection.