sentences:  The corps had a minor role in the Fourth Battle of Cassino but was involved in the Allied advance north through the summer, to the German Gothic Line defences.In September 1944 the corps played a holding role on the left flank of Eighth Army during Operation Olive, the autumn offensive on the Gothic Line.In November 1944 command of X Corps was taken by Lieutenant-General John Hawkesworth, when McCreery was promoted to command Eighth Army, in place of Oliver Leese.