British also destroyed several companies of Iraqi T-55 tanks and MT-LBs at the Iraqi 52nd Armored Division's headquarters. In the process of moving to Phase Line Smash the British forces took artillery and anti tank fire from Iraqi forces. The Iraqis failed to inflict any casualties on the British forces. On 27 February 1991 a joint British and American artillery fire mission destroyed what was left of Iraqi artillery and infantry forces at Objective Tungsten. Approximately 70 Iraqi artillery pieces were destroyed. The British also took Objective Waterloo. In the process the British destroyed approximately five Iraqi divisions in 48 hours of combat. The British 1st Armoured Division secured the final objectives on the Basra Highway north of Multa Ridge. In the final operation the British 7th Brigade took Objective Cobalt while the 4th Brigade halted farther west. The British 1st Armoured Division had traveled 217 miles in 97 hours. The British 1st Armored Division had captured or destroyed about 300 tanks and a very large number of armored personnel carriers, trucks, reconnaissance vehicles, etc. The Desert Rats also destroyed multiple Iraqi artillery positions. The division also took over 7,000 Iraqi prisoners of war including two division commanders and two other general officers. British forces did not lose a single Challenger 1 tank during combat operations. The British suffered 15 soldiers killed and another 43 soldiers wounded during combat operations. The British also lost 2 British Warrior APCs in a friendly fire incident. Objective Dorset On 26 February the U.S. 3rd Armored Division was tasked with clearing Objective Dorset which was well defended by Iraqi forces. The 3rd Armored Division, along with the U.S. 1st Armored Division, already was responsible for the destruction of 76 Iraqi tanks and 84 infantry fighting vehicles during the Battle of 73 Easting. The Iraqi Tawakalna Republican Guard division had a significant presence at Objective Dorset. The 50th Armored Brigade was the first unit the 3rd Armored Division encountered during the operation. The Iraqi defenses in this sector also consisted of three mechanized battalions from the 29th Armored Brigade and two armored and one mechanized battalion from the 9th Armored Brigade. The 46th Mechanized Brigade of the 12th Armored Division was also present. A T-62 tank battalion from the 10th Armored Division was also attached to the Tawakalna Republican Guard Division. This added up to approximately eight Iraqi heavy battalions occupying Objective Dorset. In the