Who is this person?

[L Verge]

I started to change the topic to It Runs in the Family, but decided to leave it as Who is This Person/People. Danny W hit me with this info, so now I'm spreading it on to you via a trivia question(s):

Which Confederate general's son served in World War II, was killed near the close of the Battle of Okinawa, and was the highest ranking U.S. military officer lost to enemy fire during WWII? Note: He shared rank with three others killed during the war, but was posthumously promoted to four-star general.

Which Confederate general had a great-grandson who became a brigadier general in the U.S. Army Air Forces during WWII, only to be killed in Germany, becoming the first American general to be killed during the war in Europe?