The Roan Group put out a pretty decent DVD of The Fighting Sullivans back about 20 years ago. It was their first DVD release. A bit hard to find these days, and probably fairly expensive (two copies available on eBay are each about $50).
To be honest, I think I'm probably good with not being able to get any of WW's (or SH's) holdings on blu-ray. They're all a good bit of nostalgia, but most of them aren't movies I'm especially aching to see again, Invaders from Mars being the most notable exception.
I have a bunch on DVD from...