You can just go back to the WWII era, and leading American families were pulling strings to make sure their younger sons were serving in the military - with a strong preference for front-line combat positions. Look at Joseph / John / Robert / Edward Kennedy. George Bush Sr. was one of the youngest combat pilots in the U.S. Navy. All four of President Roosevelt's sons served in WWII; as did his only son-in-law. Etc., etc.
You can just go back to the WWII era, and leading American families were pulling strings to make sure their younger sons were serving in the military - with a strong preference for front-line combat positions. Look at Joseph / John / Robert / Edward Kennedy. George Bush Sr. was one of the youngest combat pilots in the U.S. Navy. All four of President Roosevelt's sons served in WWII; as did his only son-in-law. Etc., etc.