The order, issued in a statement from the North's military "supreme command", marks the latest fiery rhetoric from Pyongyang since the start of joint military drills by U.S. and South Korean forces early this month.
South Korea's defense ministry said it saw no sign of imminent military action by North Korea.
"From this moment, the Supreme Command of the Korean People's Army will be putting into combat duty posture No. 1 all field artillery units, including long-range artillery units and strategic rocket units, that will target all enemy objects in U.S. invasionary bases on its mainland, Hawaii and Guam," the North's KCNA news agency said.
For the rest of the story: http://www.reuters.com/article/2013/03/26/us-korea-north-combat-idUSBRE92P06520130326