In World War II, the nature of combat changed significantly from the Great War, and so did the nature of post-traumatic stress disorder. Foxholes were used rather than the trenches of the First World War.
Supreme Court legalizes abortion. In a historic decision, the U.S. Supreme Court rules in Roe v. Wade that women, as part of their constitutional right to privacy, can terminate a pregnancy during its first two trimesters.
The Fourteenth amendment (Constitution) and the subsequent case law (Supreme court ruling in Roe v. Wade) are what abortion has to do with the Constitution. Supreme Court rulings can interpret the constitution, and set precedent (case law or judge-made law) and this becomes the law of the land.