" The M1A3 Abrams was a man-killer. Colonel J. “Lonesome” Jones thanked the good Lord that he had never had to face anything like it. The models that preceded it, the A1 and A2, were primarily designed to engage huge fleets of Soviet tanks on the plains of Europe. They were magnificent tank busters, but proved to be less adept at the sort of close urban combat that was the bread and butter of the U.S. Army in the first two decades of the twenty-first century. In the alleyways of Damascus and Algiers, along the ancient cobbled lanes of Samara, Al Hudaydah, and Aden, the armored behemoths often found themselves penned in, unable to maneuver or even to see what they were supposed to kill. They fell victim to car bombs and Molotovs and homemade mines. Jones had won his Medal of Honor rescuing the crew of one that had been disabled by a jihadi suicide squad in the Syrian capital. The A3 was developed in response to attacks just like that one, which had become increasingly more succesful. It was still capable of killing a Chinese battle tank, but it was fitted out with a very different enemy in mind. Anyone, like Jones, who was familiar with the clean, classic lines of the earlier Abrams would have found the A3 less aesthetically pleasing. The low-profile turret now bristled with 40 mm grenade launchers, an M134 7.62 mm minigun, and either a small secondary turret for twin 50s, or a single Tenix-ADI 30 mm chain gun. The 120 mm canon remained, but it was now rifled like the British Challenger’s gun. But anyone, like Jones, who’d ever had to fight in a high-intensity urban scenario couldn’t give a shit about the A3’s aesthetics. They just said their prayers in thanks to the designers. The tanks typically loaded out with a heavy emphasis on high-impact, soft-kill ammunition such as the canistered “beehive” rounds, Improved Conventional Bomblets, White Phos’, thermobaric, and flame-gel capsules. Reduced propellant charges meant that they could be fired near friendly troops without danger of having a gun blast disable or even kill them. An augmented long-range laser-guided kinetic spike could engage hard targets out to six thousand meters. The A3 boasted dozens of tweaks, many of them suggested by crew members who had gained their knowledge the hard way. So the tank commander now enjoyed an independent thermal and LLAMPS viewer. Three-hundred-sixty-degree visibility came via a network of hardened battle-cams. A secondary fuel cell generator allowed the tank to idle without guzzling JP-8 jet fuel. Wafered armor incorporated monobonded carbon sheathing and reactive matrix skirts, as well as the traditional mix of depleted uranium and Chobam ceramics. Unlike the tank crew that Jones had rescued from a screaming mob in a Damascus marketplace, the men and women inside the A3 could fight off hordes of foot soldiers armed with RPGs, satchel charges, and rusty knives—for the “finishing work” when the tank had been stopped and cracked open to give access to its occupants. "
― John Birmingham , Designated Targets (Axis of Time, #2)