 Complete the following phrase:  In April, following the action in which Block won his MC, the Ayrshire Yeomanry lost two COs within a few days. Block took over and in May led his regiment in the final battle for Tunis. Block embarked for Naples with his regiment and their 25-pounder field guns in February 1944. It was the Ayrshire Yeomanrys first experience of mountains and mule tracks. In April, the 1st Guards Brigade took over the 