 Complete the following phrase:  The Mounted Infantry Depot was a post where young officers could be stationed, forming a ready reserve of young, educated officers available as volunteers for staff or command positions in African colonial campaigns. It was whilst attached to this post that Alderson saw service in the First Boer War in 1881 in the Transvaal. The following year, Alderson served in the 1882 Anglo-Egyptian War, fighting at the battles of Kassassin and Tel-el-Kebir. Two years later, he was attached to the Mounted Camel Regiment during the failed expedition to 