Syria Uses Air Strikes Against Rebels (Which Usually Fail)

The crumbling regime of Syrian President Bashar Assad reportedly unleashed its air force on Wednesday in what could be the biggest aerial onslaught in a civil war that's more than a year old. Jet fighters fired on the northern city of Aleppo, Reuters and the BBC reported. But if Assad thinks his jets can tip the balance against his opposition, he doesn't understand air power.

Fixed-wing air attacks ' rare events in this bloody, grinding conflict ' can be visually impressive. But attacks by fast-moving warplanes are rarely effective in dislodging fleet-footed insurgent forces from urban areas. Bombings can, however, kill unprotected civilians and devastate homes and businesses. An air attack that kills or injures civilians 'provides insurgents with a major propaganda victory,' the U.S. Army's counterinsurgency handbook (.pdf) warns.

To be sure, most of the fighting in Syria pits the regime's infantry and mechanized forces against insurgent foot soldiers armed with rifles, machine guns and, if they're lucky, a rocket or two. Increasingly Assad's forces have deployed Russian-made Hip helicopters armed with rockets. Damascus attempted to acquire new Hind attack copters from Russia last month, but Moscow bowed to international pressure and recalled the cargo ship transporting the Hinds.

The rebels aren't defenseless. As the aerial threat escalated, the Free Syrian Army fought back with heavy machine guns and captured government anti-aircraft weapons, apparently destroying at least one helicopter, as depicted in the video above. The rebel arsenal possibly includes a captured ZSU-23-4, a fast-firing, gun-armed vehicle that was one of the most fearsome aircraft-killers of the Cold War. And the opposition has been building up its weapons expertise on Facebook and YouTube.

In general, Assad's jets fly too high and too fast for the rebels to easily hit, though insurgent fighters did manage to destroy at least one aged MiG-23 on the ground by sneaking up to the airfield and firing a rocket-propelled grenade. But the speed and altitude that protects the jets also makes it difficult for them to effectively strike rebel positions. To accurately hit Taliban fighters in Afghanistan, the U.S. Air Force relies on highly-trained observers on the ground. It's unlikely Damascus employs similar specialists.

Some reporters covering the fighting are skeptical that Syrian planes have even fired ordnance at all. The Associated Press described jets swooping over Aleppo and breaking the sound barrier as a bloodless 'show of force' ' a favorite tactic of American warplanes in Afghanistan. The AP attributed widespread destruction in the city to helicopters and artillery.

In any event, the Syrian air force could be quickly exhausted. Damascus possesses around 460 fixed-wing warplanes, according to a 2011 survey by the  Center for Strategic and International Studies ' a not insignificant arsenal. But more than half of the planes are 30-year-old MiG-21s and MiG-23s; only 40 or so MiG-29s can be described as modern.

The Syrian air force suffers 'low operational readiness, low combat sortie rates and an over-centralized battle management system,' CSIS concluded. Morale among pilots could also be low. One flier, Col. Hassan Hammadeh, defected to Jordan in his MiG-21 last month.

An air force that decrepit gets used rarely ' and only when the stakes are high. But that doesn't mean aerial attacks on insurgent forces actually work.