A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Surge definition, a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. See more.
In the context of the Iraq War, the surge refers to United States President George W. Bush's 2007 increase in the number of American troops in order to provide security to Baghdad and Al Anbar Province. The surge was developed under the working title The New Way Forward and was announced in January 2007 by Bush during a television speech. Bush ordered the deployment of more than 20,000 soldiers into Iraq, and sent the majority of them into Baghdad. He also extended the tour of most of the Army