 Most infantry divisions in the North African Campaign deployed a " cannon company " equipped with six T30s and two 105 mm T19 HMCs . In one encounter in North Africa , the T30 was used in an attempt to destroy German tanks . Although the T30s fired several volleys , the German tanks were barely damaged and the T30s were ordered to retreat under the cover of smoke to prevent losses . After several similar experiences , U.S. forces ceased the practice of employing self @-@ propelled howitzers or mortars in direct combat with tanks . 
 Most infantry divisions in the North African Campaign deployed a " cannon company " equipped with six T30s and two 105 mm T19 HMCs . In one encounter in North Africa , the T30 was used in an attempt to destroy German tanks . Although the T30s fired several volleys , the German tanks <a href='uninflect' title='1'><mark>were</mark></a> barely damaged and the T30s <a href='uninflect' title='2'><mark>were</mark></a> ordered to retreat under the cover of smoke to prevent losses . After several similar experiences , U.S. forces ceased the practice of employing self @-@ propelled howitzers or mortars in direct combat with tanks . 
Most infantry divisions in the North African Campaign deployed a " cannon company " equipped with six T30s and two 105 mm T19 HMCs . In one encounter in North Africa , the T30 was used in an attempt to destroy German tanks . Although the T30s fired several volleys , da German tanks was barely damaged and the T30s was ordered to retreat under the cover of smoke to prevent losses . After several similar experiences , U.S. forces ceased tdapractice of employing self @-@ propelled howitzers or mortars in direct combat with tanks .