According to lasdontrailofhonor.com:
Continuing on the trail you come to the World War II busts standing side by side. The two busts, one of whom is an infantryman and the other being a seaman, both visualize the struggle and hardship that all generations faced while fighting against the rising Nazi threat. In 1939 the allied powers, with the exception of the United States, declared war on a vicious Nazi Germany, whose borders had violently made their way into Poland and Austria. Japan, who had allied themselves with Germany along with Italy, soon attacked Pearl Harbor, provoking the United States to defend itself and come to the aid of the Allied forces. The war raged on both in Europe and in the Pacific, lasting a total of six years before ending in 1945 with the death of Nazi Germany’s dictator, Adolf Hitler, and finally with the bombing of Japan through use of the first nuclear weapons.