… I am going to borrow an idea from Stephen Biddle’s Military Power (2004). Biddle identifies what he calls the “Modern System” of combat (though I am going to treat it a bit more broadly than he does). In short, it’s a set of tactics and operational art that emerged out of the First World War and were refined in the European theaters (East and West) of the Second, to cope with the tremendous potency of industrialized firepower which had fundamentally reshaped war. Rather than relying on fixed positions for defense and dense shock-formations (“shock” here – think “bayonets, grenades and trench-knives”), the modern system relies on cover-and-concealment for survivability and maneuver in the offense (go around, not through your opponent’s overwhelming firepower). Adroit use of terrain on the tactical level is a key component of the system, which in turn requires both extensive training of junior officers and NCOs and devolving quite a bit of command agency down to them so that they can make local decisions (compare to, for instance, linear tactics which leave virtually no decision-making to the individual rifleman).

The modern system assumes that any real opponent can develop enough firepower to both obliterate any fixed defense (like a line of trenches) or to make direct approaches futile. So armies have to focus on concealment and cover to avoid overwhelming firepower (you can’t hit what you can’t see!); since concealment only works until you do something detectable (like firing), you need to be able [to] move to new concealed positions rapidly. If you want to attack, you need to use your own firepower to fix the enemy and then maneuver against them, rather than punching straight up the middle (punching straight up the middle, I should note, as a tactic, was actually quite successful pre-1850 or so) or trying to simply annihilate the enemy with massed firepower (like the great barrages of WWI), because your enemy will also be using cover and concealment to limit the effectiveness of your firepower (on this, note Biddle, “Afghanistan and the Future of Warfare” Foreign Affairs 82.2 (2003); Biddle notes that even quantities of firepower that approach nuclear yields delivered via massive quantities of conventional explosives were insufficient to blast entrenched infantry out of position in WWI.)

That means that modern system forces are focused on cover and concealment in defense, but on mobility – often very rapid mobility – in attack. The doctrines that developed to operationalize variations on the modern system (Bewegungskrieg, Deep Battle, AirLand Battle, and so on) all relied (intentionally or not) on pushing the tempo of an attack beyond the ability of a defender to coordinate a defense, on the theory that this would produce tactical and even operational collapse. That theory, it turns out, works very well, but it comes with some costs (I should note here I am stretching the definition of Biddle’s “modern system” a bit and also glossing over a lot of detail in maneuver warfare doctrines).

The thing is, embracing the Modern System is hard. Actually pulling this off requires a relatively high degree of training. It also requires delegating a lot of authority down to lower officers and NCOs. You need both because individual small units need to keep moving and maneuvering even when they may not have time to get direct orders from above, and they need the freedom to respond to local conditions and utilize local terrain, often down to the squad or fireteam level. In turn, that means it is really hard to do if your common soldiers are undertrained, simply illiterate, or if (as in an authoritarian regime) you can’t trust your officers with any kind of independence. Modern authoritarian “coup-proofing” makes it practically impossible to actually implement the modern system effectively (which is part of why most tin-pot dictators produce such poor military performance; though note that not all authoritarian regimes need to coup-proof in this way).

It’s also expensive. Getting the mobility to pull this off on the operational level means mechanizing almost everything in your army, so that the infantry and artillery can keep up with the advance units and so that the logistics can keep up with them. Doing that requires a lot of command sophistication, but it also just requires a ton of hardware. Everything needs to be motorized, mechanized and portable, and then all of that needs to be tied into radio communications, GPS, and so on. And because you’re delegating authority down to smaller and smaller units, those units need all of that expensive communications, and so on. All of that hardware costs a fortune.

But – and this is the core of Biddle’s argument – when modern system armies encounter armies that have not implemented the modern system in conventional pitched battle, the result is generally a crushingly one-sided affair. That’s going to matter a lot for the analysis going forward: so far, it doesn’t seem possible to hold territory (meaning not fighting as guerillas, but actually engaging in positional warfare in the Maoist sense) with a non-modern system army against a modern system army. Non-modern system armies that try get pretty badly wrecked. The 1991 Iraq war is the traditional case study in just how badly wrecked: the coalition (using the modern system) took 292 KIA; 776 WIA compared to the Iraqi Army (without the modern system) suffering 25,000+ KIA and 75,000+ WIA. That stunning lopsidedness is going to matter a lot for the argument going forward.

Bret Devereaux, “Collections: Why Don’t We Use Chemical Weapons Anymore?”, A Collection of Unmitigated Pedantry, 2020-03-20.