The United States will temporarily increase the size of its army by 22,000 soldiers to deal with demands placed on the force by wars in Afghanistan and Iraq, U.S. Defence Secretary Robert Gates said Monday.

The U.S. army currently has a total troop strength of 547,000. Roughly 130,000 are serving in Iraq, while the troop numbers in Afghanistan will rise to 68,000 by the end of the year.

It’s the second time since 2007 the army’s size has been increased.