sentences:  Further operations took place in September and October, which included IV Squadron covering the laying of defensive minefields in the western Baltic.By this time, manpower shortages began to affect the German fleet; combined with the increased threat of British submarines operating in the Baltic, the inability to man more important vessels convinced the naval command of the need to remove the "Wittelsbach"s from service.The squadron returned to Kiel in November, where it was re-designated as the Reserve Division of the Baltic Sea.