Third Phase 11 - 18 May 1944: Allied 4.2 inch mortars in action at the start of the final offensive on Cassino.

Large mortar bombs started to explode all around us followed, almost immediately, by heavy artillery fire. The enemy infantry opened up with his machine guns and tracer bullets whipped and whanged their way a few feet over our heads. I prepared to return the fire but found that, as our troops were now in my line of fire, I was unable to do so. I could see them reasonably clearly moving forward just across the river and all we could do was to watch as the machine gun bullets arched and swathed across the crossing point.