1. IOR/L/MIL/14/14159 Reference (shelfmark): IOR/L/MIL/14/14159 Title: Douglas, John Ulrich Rigg (or Ruegg) Scope & Content: Number: IA 622Highest Rank: Lieutenant ColonelRegiment: Indian Electrical and Mechanical Engineers ; Indian Army Service Corps;Date of commission: 26 Jan 1916Date of release: (15 Mar 1948) Collection Area: India Office Records and Private Papers Languages: English Date Range: 1916-1948 Extent: 1 file