According to the insignia on his uniform, Jeff served with the 2nd Armored Division in North Africa and Europe. He has been in the Army at least four years and served overseas for at least two years.
The song played by Donna Reed on the spinet is Chopin's Etude Op.10, No.3 (not No 6 as listed on here) and this piece is also featured in Sirk's "Magnificent Obsession" (1954).
One of several films released in the aftermath of World War II that had a stark, cynical plot unlike the flag-waving, jingoistic romances that were the mainstay of wartime filmmaking. The central theme in films such as this and "Living in a Big Way" (1947) involves a soldier coming home to find the life he left behind utterly uprooted, marked by a significant other outgrowing him while he was gone.
This film failed at the box office resulting in a loss to MGM of $307,000 according to studio records.