First, I'm not sure why, but about 90% of knives in most PXs (even in Afghanistan/Iraq) carry partially serrated fixed and folding knives. I've used serrated knives as an improvised saw before and they will work, just not as good as a dedicated saw...however, improvisation is an essential requirement for my profession.
I'll add my two cents to Mistwalker's reply on serrated or partially serrated blades. I mostly use plain edges these days, but I have at times carried partially serrated or a dedicated fully-serrated knife (Spyderco Military). Even with a partially serrated edge, Soldiers will rough them up pretty bad and don't always get them very sharp in the field or don't have the time to put a decent working edge on a hard-used blade. The serrations will still be able to cut (or saw

) through webbing, cord, wire, canvas, flex-cuffs, etc. If the knife user isn't going to religiously maintain his/her edge, those serrations are a God-send when needed. Also from a self-defense stand-point, serrations will shred through clothing...Spyderco has courses that really emphasize the effectiveness as a slashing defensive weapon.
There are also camps that will debate have serrations closer to the handle verse out at the tip of the blade (several SAK's have them that way). I'm not sure which is better (I like serrations closer to have the tip), but I've used all types of serrated knives and while I prefer a plain edge, I wouldn't be bothered by a fully or partially serrated knife; again, it's not the tool but the user and skill that make the difference. An EZE-LAP or Spyderco sharpener make it quite easy to touch up most serrated edges and the small section on my CR Project-1 is actually set up to sharpen like the rest of the plain edge...that's my preferred style of serrations outside of a dedicated, fully-serrated Spyderco blade.
Like I said, I'm not sure why most service members carry partially serrated knives, but I would suspect (after a few inspections) most don't spend a lot of effort keeping the plain edges sharp and if you run into some tougher material, those serrations come in handy.
Great review as usual Brian!:thumbup:
ROCK6