CHAPTER I. SOURCES OF THE DELTA. Official records in the archives of the War Department at Washington will preserve for future posterity the record of Battery D, of the 311th United States Field Artillery. In those records there is written deep and indelibly the date of May 30th, 1919, as the date of Battery D's official demobilization. The history of Battery D, therefore, can be definitely terminated, but a more difficult task is presented... more...