What was name of movie about a group of Army officers, all at the same post, apparently close to Mexican border. Officers and wives socialized together frequently, one Army wife had an affair with the commanding officer and became pregnant. Commanding officer pressured this wife to seek backstreet abortion, maybe in Mexico,to try to maintain secrecy. Army wife complied. Whole movie built around these circumstances. I'm guessing that I saw this movie at least 20 years ago.