Current edition replacement pommels and pins (and leather washer kits, not needed here) are available from Kabar customer service.
If I had that knife, being not exactly the sharpest knife in the drawer, I would
0- gently remove an inch or so of the washers
1- weld a small piece of 1/8" mild steel rod onto the broken tang (protecting the remaining washers from the welding arc),
2- cut out a new pommel out of 3/8" mild steel,
3- drill a 1/8" hole in the new pommel,
4- cut the rod that stuck out to about 1/8" proud
5- replace the washers and put the pommel on the tang,
6- clamp the blade in a vise (with some leather pieces to protect the blade)
7- peen the proud tang tight
8- grind the peened tang a bit to smooth it out.
You now have a refurbished "almost version 2" Camilus 1219C2 - The first change order by the Navy/Marine ordnance folks was eliminate the screw pommel/split nut and peen the pommel tight onto the round tang.
The other, less time consuming fix would be
0- order replacement pommel and pin from Kabar customer service
1- find a friend/relative/enemy to weld a small piece of 1/8" mild steel to the tang where the original pommel broke off
2- file the added piece to fit the slot of the replacement pommel
3- drill a hole in the added tang segment to match the pin hole in the replacement pommel
4- put the pommel on the modified tang and slide the pin into the pommel pin hole, and through your hole in the tang until it bottoms out
5- cut off any excess pin, peen it over gently and smooth it out
You now have a current Kabar 1217 pommel assembly on a WW2 Camillus 1219C2
Either way you have a unique, usable sharp, pointy object.

