Army Data Shows Constraints on Troop Increase

By Spencer Ackerman 11/18/09 6:00 AM

If President Obama orders an additional 30,000 to 40,000 troops to Afghanistan, he will be deploying practically every available U.S. Army brigade to war, leaving few units in reserve in case of an unforeseen emergency and further stressing a force that has seen repeated combat deployments since 2002.

According to information compiled by the U.S. Army for The Washington Independent about the deployment status of active-duty and National Guard Army brigades, as of December 2009, there will be about 50,600 active-duty soldiers, serving in 14 combat brigades, and as many as 24,000 National Guard soldiers available for deployment. All other soldiers and National Guardsmen will either be deployed to Iraq or Afghanistan already or ineligible to deploy while they rest from a previous deployment.

Obama is expected to announce a decision on an escalation of troop levels for Afghanistan shortly after returning from his trip to Asia on Friday, which would be the second such escalation of his young presidency. That decision follows a request issued in September from Gen. Stanley McChrystal, commander of U.S. and NATO forces in Afghanistan, in which McChrystal delivered the Obama administration with a palette of different troop-level options to turn around a faltering war effort. While White House officials have cautioned reporters that Obama has made no final choice on the size of a troop increase, a widely re-reported McClatchy story claimed that the administration was likely to send 34,000 additional troops to Afghanistan, which would raise U.S. troop levels in the eight-year war to an all-time high of 102,000. It is likely that Obama would include members of the other military services, especially the Marines, in any troop increase, but the vast majority of any new troop complement will come from the Army.

The shortage of available combat brigades means that an escalation of between 30,000 and 40,000 troops is “not realistic,” said Lawrence Korb, a former senior Pentagon official in the Reagan administration who now studies defense issues for the liberal Center for American Progress. To send practically all available soldiers into one of the two wars would leave the U.S. with “no reserve in case you had a problem in Korea.”

Click to Enlarge: Army National Guard combat brigade deployment data. (Source: U.S. Army)

Obama would have something of a cushion, but not much, in the early months of 2010. An additional five brigades will finish their 12 months of so-called “dwell time” at home between deployments by April 2010, providing an additional 22,600 troops, but by that time, about 10,200 troops will be scheduled to leave Afghanistan, leaving available a net gain of 12,400. More brigades become available in the summer and fall, although others currently in Afghanistan will be ending their scheduled deployments then as well. Under current Pentagon policy, dwell time for the National Guard varies, but can be no shorter than two years, and so it is possible but not certain that two National Guard brigades composed of 6,800 National Guard soldiers might be available for deployment by March 2010 as well, beyond the 24,000 theoretically available now. Pentagon leaders had hoped to extend dwell time this year, but that was before McChrystal’s request for additional troops.

Click to Enlarge: U.S. Army combat brigade deployment information. (Source: U.S. Army)

Furthermore, not all brigades are the same. Some are built around heavy equipment like tanks, while others are primarily light, mobile infantrymen. According to a September report by the Institute for the Study of War, a pro-escalation think-tank in Washington, no so-called “heavy” brigades have been sent to Afghanistan to date, a condition likely owing to Afghanistan’s lack of paved roads, high elevations and uneven rural terrain, all of which are inhospitable to tanks and other heavy vehicles. But of the 14 brigades available as of December 2009, five of them are heavy brigades, according to the information provided by the Army to TWI, accounting for 19,000 of the available 50,600 active-duty soldiers. There is precedent in Iraq for re-tasking heavy brigades as light brigades by deploying them without their heavy vehicles, as the Institute for the Study of War’s report points out. But there is no precedent for such a thing in Afghanistan. If the Obama administration decides not to re-task heavy brigades as light brigades, the pool of active-duty soldiers immediately available for Afghanistan shrinks to 31,600 soldiers.

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Army Data Shows Constraints on Troop Increase

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