 Complete the following phrase:  It was certainly he who, early in 1631, opportunely brought up his regiment, which had large number of Irishmen, including his kinsman Walter Butler, to Frankfort-on-the-Oder, in Silesia, where the imperialists under Tiefenbach were awaiting the approach of Gustavus Adolphus at the head of a much superior force. Before the arrival of the Swedes, James Butler, in order if possible to obtain more soldiers and supplies for Frankfort, proceeded to the camp of Tilly, who was marching upon Magdeburg. Butler came too late, but he appears to have taken part in the 