On the night of 12/13 February 1944, 10 Lancasters from 617 Squadron flew across France to the viaduct. Cheshire and Martin approached to make a low level marking of the line, but it was soon discovered that since the last attempt the Germans had placed a large number of flak guns on the hills overlooking the viaduct. Cheshire made several attempts to mark it, but could not get close enough to drop his marker on the line. Martin followed, but just as his aircraft was releasing his marker it was hit, badly. Two of the Lancaster's engines were knocked out, the bomb aimer had been killed, and several others, including Martin, were wounded. A return trip to England was out of the question, and his aircraft limped south to an airfield on Sardinia. Cheshire made five more attempts on the viaduct, but was unable to get close enough to leave his marker on the rail line. The squadron was called in and dropped their bombs off the nearest marker, but no direct hit was made and the viaduct was not destroyed. Cheshire returned in failure with a badly holed Lancaster. Despite his multiple runs at the target and the damage his aircraft sustained, it was the one mission of his career where he felt he had failed to press home his attack as he should have.