1944 Adolf Hitler Line,or the Dora Line,in Italy was breached by Canadian troops south west of Cassino.The Allied 6th corps broke out of Amzio bridgehead months after on shore. They stalled for months and could have been in Rome but leadership played in the part of being in misery and the loss of 25,000 Americans,9,000 British and 10,000 Germans. I read this on wiki.