In World War I, a black major and a white soldier met on the road. Soldiers don't salute when they see each other being black. The black officer passing by said to him, "soldier, I don't mind your refusal to salute just now." But you must understand that I am an army major appointed by the President of the United States, and the national emblem on this military cap represents the glory and greatness of the United States. You can look down on me, but you must respect it. Now, I want to take off my hat to pay tribute to the national emblem. "The soldier had to salute the officer. The black major's name is Benjamin Davis. When he first joined the navy, white people on warships looked down on him. Every time he finished his task, they would ask him a question about the navy. If you can't answer, you have to stand for one more shift, so you have to stand for two hours more than white soldiers almost every day. But he didn't choose to drink and fight to vent his dissatisfaction like other black soldiers. Instead, he spent all his time asking everyone he met about the navy until he mastered every detail of the navy, from warships to recipes-after World War I, he became the first black general in American history.