"Body parts everywhere!" cries a US soldier as a shell crashes onto a group of suspected rebels in the Iraqi city of Fallujah, where a punishing torrent of firepower thundered down on Tuesday. More than 500 rounds of 155-millimetre Howitzer cannon shells have been fired on the besieged Sunni stronghold west of Baghdad since a US-Iraqi offensive to take control of the city started on Monday evening, said Sergeant Michael Hamby. Using a global positioning system, each shell is precision aimed and fired at insurgent spots, while unmanned reconnaisance aircraft check whether the target was hit and feed back the...