1. IOR/L/MIL/14/4601 Reference (shelfmark): IOR/L/MIL/14/4601 Title: Gruhn, Frederick Ferdinand Scope & Content: Number: OW 166Highest Rank: Temprary MajorRegiment: Royal Indian Army Service CorpsDate of commission: 25 Apr 1928Date of release: 6 Apr 1948 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1928-1948 Extent: 1 file