As you can see, the finish is pretty bad on both and the blades are pretty messed up. Can anyone work on this?
The finish itself doesn't look that bad to me. It is pretty free from rust. It is grayed out some, maybe partially from a patina partially from lots of scratches from use.
I don't know much about the value of old knives, I would have to google the model names the same as anyone else. As pointed out, in real historical items you don't want to restore them as that can take away the value. As I understand it one of the ways sword aficionados determine the value of a sword is the natural wear from time. Refinish them and they lose value.
As far as restoring them, what did you have in mind? The grind lines are a little faded and removing a small surface layer might sharpen up some of the lines and give the metal a new fresh finish. It could be taken all the way to a mirror finish if you really wanted. Problem is that it will be making the knives a small amount thinner. It would also cost you a bit more.
One way of finishing a knife is with an abrasive wheel in a fine grit that will leave fine scratches but all in one direction. This would be an easy way to make the surface look a little more uniform and I could explain it or find a video where you could probably do it yourself if you like. I can also redo the handles although the ka-bar is usually a stacked leather disk type with a threaded end piece. I have never done those before but the process isn't that complicated. It actually looks in good shape from the picture.
I cannot tell from the picture but how is the edge quality. I am not sure what you are interested in doing exactly but honestly, depending on the quality of the knife, all I would probably do is put a fresh new edge grind on it. It won't be the prettiest girl at the party but she will serve you well.
Let me know what you have in mind and we can figure out a plan.