Tanks Anyways
After much hemming and hawing, too-ing and fro-ing, Germany has finally relented and agreed to the provision of German-built Leopard II tanks to Ukraine. Apparently the deal clincher was an American agreement to supply 30-odd M1A2 Abrams MBTs. These will join a modest number of Challenger IIs to be provided by the UK.
This is an important development, but not an earth shattering one as some on each side are saying. Some pro-Ukrainian western observers assert this will allow Ukraine to recapture all its lost territory-including Crimea-from Russia. On the other side, which includes the Russians and many right wing populists in the United States, this is the next step to Armageddon. As Trump put it: “today tanks, tomorrow nukes.”
Settle down, everybody. (A big ask, I know.)
Yes, these MBTs are far superior to anything Ukraine currently operates, and to anything in the Russian armory. On every crucial dimension, the western-supplied tanks are superior: firepower, protection (including protection of ammunition), cross country performance, gun accuracy, optics and fire control systems. Optics and fire control systems are especially important because it has been long known that in armored battles, he who shoots first almost always wins. Iraqi tankers found this out to their dismay (if they were lucky enough to be able to find out anything) in 1991 when their tanks began exploding from hits from M1s that they couldn’t even see. Although both the western and Russian tanks have improved in the decades since, the already yawning gap in performance demonstrated in 1991 has only increased over the years.
But quantity has a quality all its own, as Stalin was wont to say. And the fact is that the quantity of tanks being supplied Ukraine is modest. Given the inevitable attrition due to combat and breakdown, the approximately 300 tanks is about enough for one armored division for one big battle.
Consider the use of this type of force on the defense and offense.
On the defense, an armored force of this size and quality could stop Russian armored advances and launch devastating counterattacks–if they are located where the Russians choose to attack, or can get there in relatively short order.
Given the record of the last 11 plus months, moreover, it’s not clear that Ukraine needs this force to defeat a putative Putin armored attack. In February-March of last year, Russia proved singularly incapable of utilizing armor effectively in the offensive, and its tanks proved easy pickings for anti-tank guided missiles. This was in part to (as I wrote at the time) Russia’s incompetence at combined arms tactics: tanks without infantry are extremely vulnerable. Given the dross with which Russian formations are being reinforced with, and the lack of training they have received, their capabilities are almost certainly worse rather than better than a year ago.
Logistical failings also helped doom the Russians in early-2022. If anything, massive attrition in vehicles and the effect of HIMARS has worsened their logistics woes: due to HIMARS, the Russians are being forced to locate their supply dumps well to the rear, increasing the duration of vehicle trips (effectively reducing supply capacity) and increasing the vulnerability of supply convoys to attack by drones, air attack, artillery attack, infiltrators, partisans, what have you.
So although an impending Russian spring offensive is anticipated, there is no reason to believe it would fare any better than the last one, and considerable reason to believe it would fare worse, tanks or no tanks.
Insofar as offensive operations are concerned, yes, the western MBTs can provide a striking force that might break through Russian lines. But a decent-size force of modern tanks is likely a necessary but not sufficient condition for such an outcome.
Successful armored assaults often rely on surprise and indirectness rather than mere smashing power. Tanks deployed against a weakly held section of an enemy line are far more effective than those hitting strong prepared positions. Compare Ardennes (1940, 1944) to Kursk (1943) or even the Seelow Heights (where in April 1945 a massively superior Soviet armored force took horrific casualties to overcome prepared but weakly-held defenses).
Achieving such an outcome requires considerable operational skill and operational security. Recall the lengths to which the US went to conceal its shift of its armored striking force from fronting Kuwait to fronting Iraq some distance to the west in order to be on the Iraqi flank. (In the event, the Marines smashed through prepared defenses in Kuwait, but the point holds). In 1940 and 1944 the Germans were helped by overoptimistic French and then American/British assumptions which led them to leave the Ardennes weakly defended and to discount the possibility of German massing there. At Kursk, the preparations were too massive to be concealed, giving time for the Soviets to construct a defense in depth which ground down the German armored spearheads before they could achieve a decisive penetration and breakout. Subsequently the Soviets launched a massive armored counterattack–against weaker German forces on the flanks. The same thing happened at Stalingrad.
Recent Ukrainian successes suggest some skill at deception and operational security. They evidently duped the Russians into believing the main Ukrainian effort would be in the south but instead the attack started in the Kharkiv region–agains skeleton Russian forces.
But there’s no guarantee of achieving that again, and ironically, the very mass of a big tank force makes deception and operational security all the more difficult.
There’s also the issue of whether the Ukrainian army can carry out the combined armed tactics that are necessary to succeed in an armored strike against opposition. The large casualties they have suffered over the past 11 months has certainly weakened what combined arms skill they possessed prior to 24 February 2022.
Further, there is considerable room to question how deep a penetration Ukraine could achieve. Its logistical capabilities are also limited, and the tanks they are receiving are gluttonous consumers of fuel (especially the Abrams). It would also have to confront the inexorable logic that every kilometer of advance hurts the attacker’s logistics and helps the defender’s.
And with respect to logistics, tanks require considerable maintenance support to begin with, especially when they are on the move. The fact that Ukraine is receiving three different kinds of MBT, each requiring a separate support structure (which will be of suboptimal scales) means that a lower percentage of their tanks will be operating at any time than would be the case for an American division operating a single type of vehicle.
In sum, the new western tanks will help shift the balance in Ukraine’s favor, but are unlikely to do so in a decisive way. I doubt that they will shorten the war appreciably, especially since even though they will likely result in more Russian losses on the battlefield, such losses have clearly not persuaded Putin to consider giving up, especially on terms suitable to Ukraine. And any advances the tanks facilitate will only encourage Ukraine in its belief that it can restore its 2014 borders.
So my prediction is that the western MBTs will mainly shift the line of stalemate to the east. Perhaps a considerable distance, but not nearly the distance Ukraine desires.