Everyone these days talks about a potential war between the US and China. Thus, it would be beneficial to find out what such a war would actually look like.
To understand what a China-US war would play out, we must understand why such a war would be fought and what actions either side would take. The most commonly predicted scenario is a Chinese attack on Taiwan, which would involve a massive first strike using missiles aimed at defeating US forces in the reason. The scenario that the Chinese consider to be “most probable” would involve a US attack on the mainland, presumably to hold on to their status as the world’s sole superpower for a bit longer.(1)
In the first scenario, the Chinese would presumably launch a massive surprise attack on US bases in the region using ballistic missiles with submunitions, attack US naval forces with submarines and missiles, and launch an amphibious invasion of Taiwan.
The amount of missiles and aircraft the Chinese can throw at the local US bases would mean that these bases would be disabled even if air defense systems operate as planned.(3) However, the short scramble time of US jets (around 8 minutes)(4) means that most jets would be able to immediately retaliate. The US has around 500 fighters (5) in the region, while China has about 1000 (2), however the superiority of US aircraft and pilots means that the USAF will wipe out most of the Chinese force in the initial combat.(6) However, since the American planes will lack airbases to return to, and since American tankers are highly vulnerable, most US fighters will crash. Thus US air superiority will depend on aircraft carriers, although their opponent, the PLAAF, will be greatly weakened.
The Chinese will also make a point to attack American satellites on the first night of the war (7). Since the US army and Air Force rely heavily on satellite intelligence, they will not be able to operate as effectively as they have in the past. However, US forces will not be completely crippled without satellites, as their functions can be largely replaced by UAVs, shipborne communications, and portable ground radars. (8) The US also possesses advanced anti-satellite technology, which can also be expected to be used extensively. Thus both sides would be denied satellite use, which would again hurt the US more, although NASA and private space launch firms could quickly replace some satellites.(9)
China also possesses nuclear warheads and ICBMs capable of striking the US, although they only have 240 warheads and even fewer ICBMs. Nevertheless, both China (10) and the US (11) abide by MAD theory and have made it clear that they will not use nuclear weapons. However, if nuclear weapons were to be launched, the inferiority of China’s weapons (they are liquid fueled, making them easier to shoot down and less accurate), their slow response times (Chinese missiles are unfueled in their silos, meaning that their missiles would take three hours to launch, although poor detection systems would make the response time even greater. US missiles, by contrast, can launch in under two minutes, and benefit from an advanced detection system), and the huge size of the American arsenal (5,113 warheads) means that China would be obliterated, at comparatively little cost to the United States. Current US nuclear primacy also means that if a war became unwinnable, nuclear weapons would be on the table. (12)

The biggest variable in the war would be cyber warfare. Both sides posses some kind of cyber warfare capability, although only the US possesses industry disrupting technology like Stuxnet. However, the US is also the most vulnerable to a cyber attack, since their forces rely heavily on network-centric operations and UAVs (which can be hacked). In the event of a major war, the Chinese would have the capability to disable most of the US power grid, injure the economy, and somewhat decrease (though not cripple) the US army’s ability to fight. Whether or not they would be willing to do so remains unclear, but all signs point to yes, since there is no military reason why they would not, and politics would be much less of an issue in a war. The US could easily retaliate, however, and since their cyber warfare capabilities are more advanced. An American counter attack would probably result in a crippling of Chinese communications (which are not secured), network-centric warfare operations, power grid, and probably economy. Thus, the US would benefit most militarily from a cyber war (since network-centric fighting is not vital to the US war effort, and since a loss of communication would be far more devastating to the Chinese than a loss of network-centered warfare capabilities would be to the US), although China would benefit most overall (since the destruction of the US power grid and crippling of the economy would reduce support for the war and make the country unwilling to fight).(13)
However, most of the war will be fought at sea. (14) The Chinese would most likely manufacture crises in the Middle East through Iran (and its terrorist network) to tie down US carriers. It would then deal with the much smaller US force in the region using ballistic missiles (specifically the DF-21D), ship and submarine based anti-ship missiles (AShM), submarines, and naval mines. (15)
The primary concern for US fleets is said to be the DF-21D long range ballistic anti-shipping missile. However, all US fleets include at least one ship equipped with the Aegis ballistic missile defense, which has been proven to be effective against missiles that fly much faster than the DF-21D. Most scholars agree that Aegis will be effective against threats such as the DF-21D, so China’s ballistic missiles should pose little threat to US naval forces.(16)
China also possesses regular AShMs, which can be fired from aircraft, surface ships, submarines, or land based batteries. The USN has two means of air and missile defense: fighters on patrol and the Aegis Air Defense System. Since the fighters will be involved with air superiority duties, the task of air and missile defense will fall to Aegis. Aegis is a complex system centered around the AN/SPY-1 radar, considered to be the most powerful shipborne radar in the world. The system integrates long range SM-2 anti-aircraft missiles, Enhanced Sea Sparrow missiles and RIM-116 RAM missiles for close in defense, and Phalanx automated autocannon turrets for extreme close in defense. The system has proved effective in most (80%) (17) test engagements against missiles that simulate both cruise and ballistic missiles.(18) Although there are concerns that the Chinese may be able to overwhelm the system with an unending wave of attacks, Aegis is capable of engaging up to one hundred targets at once, although a new AESA-type radar (AN/SPY-3) will increase that number. (19)
However, China has one missile capable of defeating the Aegis system: the Russian 3M-54E Klub cruise missile. It flies stealthily along the surface of the water, and then launches into a supersonic sprint moments before impact, giving the target ship almost no reaction time. The US navy has stated that they lack a means of defeating this missile (20), although the Chinese only have 50 in their inventory (21), meaning that the US can just attack the ships carrying said missiles.
The Chinese also posses extensive amounts of naval mines. However, the US navy possesses extensive anti-mine technology, which it used to great effect in the Gulf War. Further, the few mines that did strike US ships did little damage, and most ships were able to continue operations while sustaining mine damage. (22) Current US mine countermeasures technologies and experience with using these technologies (23) means that mines will at best be a nuisance that could force the US to expend valuable ships mine hunting instead of carrying out combat operations.

The biggest threat to US naval supremacy is submarines, specifically diesel-electric submarines. Modern diesel-electrics are almost completely silent, can swim in shallower waters than their nuclear counterparts, and are far cheaper. The US navy has consistently lost to both modern (such as the Dutch Walrus class) and outdated (such as Australia’s Collins class) subs in exercises. The US Navy also lacks any effective means to train to detect diesel-electric submarines.(24) China has 52 diesel-electric boats, and has both copies of the advanced American Mk. 48 torpedo and the Soviet supersonic Shkval torpedo, both of which can easily sink a carrier.(25)
Finally, although land forces will probably not be a factor in a US-China war, they are worth noting. The USMC is the world’s finest Marine force, in terms of quality of leadership, soldier quality, and technology. Thus the Marines would probably be able to land in either China or Taiwan easily. (26) Although the Marines are presumed to be superior to the PLA, they would be outnumbered so dramatically that any Marine assault would be quick to fail. Attempts to land Army transports would require total sea superiority, which could not be guaranteed due to Chinese submarines. Thus an American land assault would most likely end in complete and total destruction.
So, with these factors in mind, we can imagine a US-China war in which China strikes first would look something like this:
Chinese forces strike first en masse, destroying US airbases, satellites and sinking several ships. The PLAAF is defeated within several days or weeks by naval aviation, local fighter squadrons, and fighters from around the world. US air supremacy allows for two things: ensuring protection of US fleets from AShMs, and pummeling the Chinese forces in Taiwan. China also initiates a cyber attack that destroys most of the US economy and power grid, although the attacks are repulsed quickly. Retaliatory American attacks on Chinese industry, coupled with conventional attacks on Chinese shipping and bombing of industrial centers eliminates public support for the war. After several months, the American public become war-weary after seeing the extreme casualties inflicted upon them by the Chinese. The Chinese government, seeing the damage done to its navy and its economy, decides to pursue peace. The talks come before a US amphibious invasion of the mainland, and although the option is kept on the table, it is a bluff by the US, since such an invasion would most likely be a failure. A treaty is signed, but only after extreme losses in both blood and treasure to both sides.
The other side: US declares war on China
The US government lacks (to my knowledge and the knowledge of the Internet) a plan to actually invade China, since doing so would be economic and political suicide. However, if such an attack were to occur, it would most likely be intended to overthrow the Communist party.
With that as the main objective, indiscriminate killing of civilians would not be an option. Instead, cyber warfare and traditional psychological warfare (PsyOps) would open up the Internet, radio and news to Chinese civilians while spreading propaganda. Meanwhile, airstrikes and cruise missile attacks on radar installations, air defense centers, and government structures. The hope would be for the Chinese public to revolt against their government to spare the US the need to mount an amphibious invasion.
This strategy would probably backfire, for several reasons. First, the Chinese military is designed with one purpose: prevent an invasion. The Chinese navy consists mostly of small missile boats designed to operate only in the littorals (coastal regions). So while these boats would have little effect on a US force defending Japan or Taiwan, they could be a major nuisance to an invasion force. They have an impressive amount of short range ballistic missiles that would easily rout any force that attempts to attack targets there. China also lacks any targets that if destroyed would cripple their air defense system.There is a possibility that such targets exist, but they are classified, however evidence seems to show that China’s radar installations are too widely dispersed to be taken out by a single blow. (27) Further, China has an advanced air defense system that would frustrate any prolonged air campaign in the country.(28)
Second, the Chinese populace seems unwilling to rise up against their government. Support for America is already very high, so PsyOps would have little effect. The Chinese government has reliably crushed democracy demonstrations in times of war or peace, which would deter any possible revolution.
So while a Chinese attack would eventually fail, albeit at high cost to both participants, a US attack would also fail, although for much different reasons.
Citations
1 If it comes to a shooting war..., Victor Corpus, Asia Times Online, 20 April, 2006 http://www.atimes.com/atimes/China/HD20Ad03.html
2 Air Combat Past, Present and Future, John Stillion and Scott Perdue, RAND Project Air Force publication, August 2008.
3 Norad on Heightened Alert: Role of air defence agency rapidly transformed in wake of Sept. 11 terrorist attacks, Linda Slobodian, published in The Calgary Herald, 13 October 2008
4 http://www.af.mil/publicwebsites/sitecmd.asp?id=8 USAF forces in the Pacific
5 Adam Baddeley (February 2011). "The AMR Regional Air Force Directory 2011". Asian Military Review.
6 IBID #2.
7 IBID #1
8 Desert Victory: The War for Kuwait, Norman Freidman, September 1991, Naval Institute Press.
9 Anti-satellite (ASAT) Capabilities of US Missile Defense Systems, David Wright and Laura Grego, Disarmament Diplomacy December 9, 2002.
10 China’s Perspective on Nuclear Deterrence Sr. COL Yao Yunzhu, PLA. Air & Space Power Journal, 1 March 2010. http://www.airpower.au.af.mil/airchronicles/apj/apj10/spr10/yao.html
11 Mutually Assured Destruction Revisited, COL Alan Parington, USAF, Airpower Journal, Winter 1997 http://www.airpower.au.af.mil/AIRCHRONICLES/apj/apj97/win97/parrin.html. and Obama Endorses Mutual Assured Destruction, Ron Pistaro, 11 July, 2009.
12 The Rise of U.S. Nuclear Primacy, Keir Lieber and Daryl Press, Foreign Affairs, March/April 2006. http://www.foreignaffairs.com/articles/61508/keir-a-lieber-and-daryl-g-press/the-rise-of-us-nuclear-primacy
13 HOW CHINA WILL USE CYBER WARFARE TO LEAPFROG IN MILITARY COMPETITIVENESS, Jason Fritz, Culture Mandala, V ol. 8, No. 1, October 2008, pp.28-80
14 How We Would Fight China, Robert D. Kaplan, Atlantic Magazine, June 2005. http://www.theatlantic.com/magazine/archive/2005/06/how-we-would-fight-china/3959/2/
15 IBID #1
16 Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress, Ronald O’Rourke (Specialists in Naval Affairs), CRS report for Congress, 8 April, 2010.
17 Air Defense: Teaching Old Aegis New Tricks, Strategy Page.com, 20 March, 2010. http://www.strategypage.com/htmw/htada/20090320.aspx
18 Aegis Cruiser Intercepts Two Simultaneous Targets on Missile Test, Defense Update, 27 April, 2007. http://defense-update.com/newscast/0407/news/270407_aegis_bmd.htm
19 Fact File: Aegis System, US Navy, 2 November 2011 http://www.navy.mil/navydata/fact_display.asp?cid=2100&tid=200&ct=2
20 Navy Lacks Plan to Defend Against ‘Sizzler’ Missile, Tony Capaccio, Bloomberg, 23 March 2007, http://www.bloomberg.com/apps/news?pid=newsarchive&sid=a5LkaU0wj714&refer=home
21 China’s “Peaceful Rise” in the 21st Century: Domestic and International Conditions, Suijin Guo, Ashgate Publishing ltd., 2006
22 IBID #8
23 21st Century U.S. Navy Mine Warfare, Maj. GEN Thomas Benes, USMC, Anne Sandel, June 2009.
24 Diesel-Electric Submarines, the U.S. Navy’s Latest Annoyance, Grace Jean, National Defense, April 2008, http://www.nationaldefensemagazine.org/archive/2008/April/Pages/AntiSub2301.aspx
25 The PLAN Submarine Force, Sid Trevethan, May 2004.
26 Marines.com
27 ANNUAL REPORT ON THE MILITARY POWER OF THE PEOPLE’S REPUBLIC OF CHINA, DOD, FY04 (presumably 2004).
28 China’s Air Defense Missile Systems, Carlo Kopp, Defense Focus.