Today's Army is set to improve on the combat-tested model, responding to combatant commanders' requirements while increasing the time soldiers have at home.
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Army Rotation Model Offers Increased Dwell Time

Balancing providing ample military forces with giving soldiers sufficient rest in between is a military challenge. Today's Army is set to improve on the combat-tested model, responding to combatant commanders' requirements while increasing the time soldiers have at home.

The new model for the Army permanently builds increased dwell time into the Army deployment structure.


The Army's new model is designed around three "rotational force packages:" at war/ available to deploy; in training; and in reset. Soldiers will still be deployed from all available resources, but the entire package will not likely be deployed all at once.

Under the plan, each package would have one corps headquarters, five division headquarters, 20 brigade combat teams and 90,000 enablers. Within those numbers are Guard and Reserve units and soldiers, showing that nonactive Guard and Reserve soldiers will be formally transformed into a vital part of the deployable Army.

The three packages will be at varying states of readiness and availability as they move through the ArForGen model's reset and train, ready and available pools, allowing the Army to deploy some or all or combinations of units based on the demands from combatant commanders.

These force packages also would provide more stability and predictability to soldiers and help the Army increase dwell time for its combat-seasoned troops. The Army's goal is to give active-duty soldiers two years at home for every year they're deployed, and four years at home for Guard and Reserve soldiers.


Approved by the Army secretary in 2006, ArForGen's old model called for the Army to deploy its forces, fight and then redeploy. It was not designed to repetitively generate and cyclically deploy the force. The Army had to have more forces available and ready at any given time.

Under the old tiered-readiness model, the Army was tiered across components and across the active component. There were very ready active component forces such as the XVIII Airborne Corps, the 82nd Airborne Division, the 101st Airborne Division and the 1st Cavalry Division, all maintained at higher readiness than active duty units, and virtually none of the Guard and Reserve was ready.

The model has been refined over recent years and today, it is a model that has been flexible and collaborative. Everyone with an equity in producing trained and ready formations can participate in the processes of ArForGen.


ArForGen also caused the Army to change the way it uses its reserve-component forces. Over the course of many recent years, the Army has employed reserve-component forces as a fully integrated part of the operational force, showing a larger reliability on citizen-soldiers and community-based formations in Army National Guard and Army Reserve.

Since the beginning of the wars in Afghanistan and Iraq, more than 600,000 reserve-component soldiers have been mobilized; typically, about 75,000 reserves are mobilized each year.

Today's Army has 68 brigades committed to fighting the wars overseas, 23 brigade combat teams committed, and within that number, five brigades from the Army National Guard and 45 brigades that are either multifunctional brigades or functional brigades, and of that, 15 are from the reserve component.

In the main operations in Iraq and Afghanistan, there are three corps committed, four divisions that are currently committed and soon a fifth division.

The United States Army has always been a model of resiliency, adapting over the course of two protracted conflicts. Army Force Generation allows for the continuation to produce this force, organize it, man, equip, train it, deploy it, allow combatant commanders to employ it, then redeploy it, and then reset it while replacements are generated.


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