Interesting discussion but back to the main question, here's my two cents FlyBirdie.
I have deployed to the desert many times myself, not as a ground soldier (USAF pilot) but I have been in tent conditions for months on end, patrolled with the security forces several times, experienced the worst the desert weather there is, and have seen all kinds of different approaches to gear in the desert and elsewhere throughout the world. That coupled with my personal combat survival kit preps and backpacking/tactical shooting/survival oriented excursions I recommend the following overall advice, then specific recommendations:
Deployment Blade Considerations
1) Weight is paramount: Scrutinize every ounce. Does it's utility, life-saving capability in
that situation make it worth carrying? If not leave it.
2) What's your base of operations?: This is critical. When backpacking your BO is your pack. Remember #1. That limits you to one maybe two blades. A quonset hut, fixed base tent, Hummer, or Bradley will give you more options and a place to store stuff. But if you're constantly breaking camp, told to fit everything in one duffle, and humpin' all your gear, your knife selection will be limited. Also consider possible hump distances in the equation.
3) Different blades for different missions: Ideally you should have a selection of tactical blades to fit different situations and your job. If your likelihood of encountering the enemy is high, then your blades should be suited mostly for killing. If it's low, the utility side (food prep, opening boxes, cutting wood, etc) of the scale should win. And having a good selection is more affordable than ever; there are many
great blades out there that $200 could have you WELL on your way (see recs below).
4) Having a backup is good: If you are in a combat scenario having a backup I think is mandatory. There's a lot of what ifs out there and a lot of scenarios where a blade maybe you're only weapon left. Yes a pistol backup is great but is it allowable in your MOS and again there's the weight. A 9mm at
minimum will weigh you down at least 26 ounces loaded (exactly for the Glock 26 w/ ten rounds)... that's 1 lb 10 ounces... that's 3 ounces
more than a Becker BK9! A Cold Steel Mini Tac neck/web gear knife weighs 3.7 oz and could save the day. Can you afford not to carry such a blade? Always have a backup especially when it's almost w/o weight penalty.
Specific FIXED blade recommendations and justifications:
Cold Steel Mini Tac neck knife: 3.7 oz, $30, extremely sharp, LIGHT, nice thin blade, good kydex sheath, can be lashed onto webgear or neck carried, hold to appreciate!
Cold Steel Safekeeper dagger: 5.2 oz, $30, push variety, check on Geneva legality (w/ all dbl edge knives) but it's a great backup, secure hold, Kydex ('Securex') sheath, light, great slasher/stabber.
Cold Steel Kobun Tanto 420 SS: 6.8 oz, $36, medium quality steel but easily sharpened, super light full size knife, thin blade really cuts!, great penetrator. Note: sheath needed hand stitching for more retention though.
Cold Steel Peace Keeper II SS: 8.0 oz, $42, med. quality steel, good hold with Kraton grip (like all my CS knives), double edged, med. utility, good compact fighter.
BenchMade Nimravus 140 BT with Santoprene sheath; 8.9 oz, $100, great steel (154 CM), razor sharp, light, tough, subdued, secure sheath, great utility and defensive ability, good food prep and slicing knife too.
SOG SEAL Pup: 9.5 oz, about $55-60,
NOT recommended, cutting surface is limited.. almost first 1" of the blade has no edge coming out of the handle; serrations near impossible to sharpen and prevent good utility slicing ability, small grip.
S&W Search & Rescue (440 SS); 12.8 oz,
$24!, surprising choice!, way affordable, good steel, hammer pommel, ok sheath, rubber grip, subdued, cheesy velcro retention you can fix. You can trash or lose it at this price! Buy two!
SOG Government Agent: 12.3 oz, $70,
Great choice., outstanding grip and balance, hammer pommel at no extra weight, blade has equality utility and fighting abilities, good steel (not great though), light for abilities, subdued, great Kydex sheath, affordable. Note: I had to carefully radius the knife guard with a fine file to make extraction smoother.
I would not recommend the SEAL Pup for the above reasons... and I have one too. Best all around awards in my book go to the Nimravus 140 BT and the SOG Government Agent with the Nimravus winning the weight contest. Any of the CS backup blades would serve you well too. The aforementioned advice on folding tactical knives and SAKs is good too. I would agree a folder is generally more used and useful in almost all facets of your activities but they aren't as defensive. That's a whole 'nother post.
I go for utility and value in my knife selections and generally discount hype, prejudice (like against CS), and 'steel elitism.' I go where the best blades are for the money for my intended uses. I know there's better blades but for a lot more $$ and most of the above are great, durable knives. I bought most of them at
Knivesplus.com or
New Graham Knives ... both have great prices but Knivesplus selection is somewhat better. The blades shown below and the 'advice' I give are derived from my own research and preparations for same thing you're going to do... deploy for war. And I have and have used each one. These blades are all in my own deployment arsenal. Hope all this helps.
PS: The following knives, while excellent, I feel are generally too big and heavy for on-foot patrolling. Additionally the necessity for really large, heavy blades in the
desert is questionable... you ain't going to be building shelters from the local forests. The are listed by way of weight comparison.
KaBar Marine Combat 15.5 oz
Cold Steel Peace Keeper I SS 11.7 oz (rel. light but too big for narrow use)
SOG SEAL 2000 Full Size 16.5 oz
KaBar New Generation 17.5 oz
Becker Survival BK7 17.7 oz
S&W HRT Combat 18.5 oz
Becker Survival BK9 23.3 oz
Affordable Deployment Knives