Winds of the World by Talbot Mundy

Now, India is unlike every other country in the world in all particulars, and Delhi is in some respects the very heart through which India's unusualness flows. Delhi has five railway stations with which to cope with latter-day floods of paradoxical necessity; and nobody knew from which railway station troops might be expected to entrain or whither, although Delhi knew that there was war.

There did not seem to be anything very much out of the ordinary at any of the stations. In India one or two sidings are nearly always full of empty trains; there did not seem to be more of them than usual.