The widow's of veterans have few extra or new benefits. If their spouse had retired with benefits, they would continue to receive the ability to access military health care and shop on military bases, as well as receive some portion of their spouses' retirement pay.
Otherwise there is little to assist a veteran's widow.
My mother lost her health benefits pre 1982. I took her to a Navy hospital for a surgery. The surgeon told me, after surgury, that congress had cut widows health benefits. Soon after she received a new military ID, On the back it said "Benifits No" Widow WWII Vet