********* Some Infrastructural Facts about Indian Railway*********
The Indian Railways is divided into zones, which are further sub-divided into divisions, each having a divisional headquarters. There are a total of sixty-nine divisions.
Each of the divisions, is headed by a Divisional Railway Manager (DRM) who reports to the General Manager (GM) of the zone. A DRM can be appointed from any services of Indian Railway, Indian Administrative Service (IAS) and Indian Revenue Service (IRS) for the tenure of 3 years but it can be exceeded on the recommendation of Railway Board. Divisional officers...
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heading all departments viz. engineering, mechanical, electrical, signal and telecommunication, accounts, personnel, operating, commercial, safety, medical, security branches report to the Divisional Railway Manager. The DRM is assisted by one or two Additional Divisional Railway Managers (ADRM) in the working of the division.
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Longest Zone of Indian Railways:
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The Longest Zone is the Northern Railway having 6968 km as it's Route Length.
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Shortest Zone of Indian Railways:
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Whereas the shortest Zone is Eastern Railway having 2414 km as it's Route Length.
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For More Details: Zones and Divisions of Indian Railways
I also attach here the PDF Document of "Indian Railway's Zones & Divisions with Headquarters"(Latest & Revised)
Link of this PDF Document: click here