March grew up in rural Alabama in a family so poor that he could not finish high school, and he did not earn a high school equivalency until he was 20. He later studied law but was again unable to afford to finish his studies. In 1917, while working in a Manhattan law office, he volunteered for the US Marines and saw action in World War I, for which he was decorated with some of the highest honors—the French Croix de Guerre, the American Distinguished Service Cross, and the U.S. Navy Cross. After the war he again worked in a law office before embarking on a financially successful business career.