Cruising through the serene green wadis that connect south Lebanon to the Litani river to the north, the commander explains what happened at the end of the last war. "We knocked out three of their tanks on the first day, as they tried to enter," he explained at a turn-off by the village of al-Qantara. "But after they entered the wadi, we knew they were going for the river and had to be stopped. So we called out to all the special forces anti-tank teams in the area. And they all swarmed the wadi. Boys would set up and wait for the tanks, fire off their rounds and then pull back. Then they would pull back a kilometre or so down the wadi and wait for them again."
According to Israeli military reports, after the first and last tanks were hit by rocket fire or mines, killing the company commander, the 24 tanks were essentially trapped inside a valley, surrounded on all sides and pinned down by mortars, rockets and mines. Eleven tanks were destroyed and the rest partially damaged and Israel lost at least 12 soldiers.
Go read the rest; there's a fair amount of speculation of the informed sort, and an appearance from Andrew Exum opining that the reinforced UNIFIL has succeeded in moving Hezbollah away from the border, rather as it was meant to. Actually, the reinforced UNIFIL should surely be counted as one of the unexpected successes of the last few years - especially if you remember all the yelling at the time.
However, this may be less important than it appears, especially if the Hezbollah guy's account of their tactics in 2006 is representative - there's no reason why they couldn't keep doing that every kilometre, and indeed that's what the original idea of a screen of small groups of men with guided anti-tank weapons was meant to do in front of the main NATO armies in Germany (remember this post and Stephen Biddle's analysis?)
Further, the whole concept of a buffer force assumes that both sides would rather not fight, but that neither is willing to make the first move - that a classic security dilemma is operating. If one or both parties are determined to initiate more violence, though, this breaks down. And it's worrying to see how a lot of Israeli commentary about 2006 has changed over time - in the first 18 months or so, there was a lot of frankness around. The war had clearly been a failure, and Hezbollah had surprised everyone by defending southern Lebanon effectively. Roughly since Gaza, there's been a denialist phase - a bit like David Lloyd's crack that "we flippin' murdered them" after the England cricket team ran out of time trying to beat Zimbabwe. A lot of stuff was blown up in Beirut, and if it wasn't for those pathetic politicians, we'd have won. You know the pattern.