asymmetric warfare

:  warfare that is between opposing forces which differ greatly in military power and that typically involves the use of unconventional weapons and tactics (such as those associated with guerrilla warfare and terrorist attacks) Challenging the United States in conventional combat is an invitation to disaster; combat operations emphatically demonstrated that when Iraq's army disintegrated under pressure from U.S. airstrikes and ground assaults. So Iraqi insurgents have increasingly resorted to unconventional or “asymmetric” warfare—hit-and-run ambushes, snipings and the extensive use of homemade bombs—to inflict casualties while minimizing their own risks. — Ed Timms, Dallas Morning News, 13 Nov. 2003 But the kind of asymmetric warfare that typifies combat with terrorist and other armed groups is nothing new. — Kenneth Roth, State News Service, 30 Dec. 2009 … Marines would become key players in irregular and asymmetrical warfare … — John D. Burrow, Marine Corps Gazette, January 2011