1. IOR/L/MIL/14/1198 Reference (shelfmark): IOR/L/MIL/14/1198 Title: Gahan, John Scope & Content: Number: IA 578Highest Rank: Lieutenant ColonelRegiment: Royal Indian Army Service CorpsDate of commission: 26 Sep 1914Date of release: 7 Sep 1944 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1914-1944 Extent: 1 file