Section 776(b) in Police Regulations, Bengal , 1943
(b)Probationary Assistant Superintendents recruited in England shall draw pay from the date on which they report to the authorities their arrival in India and service for increments shall count from that date or from the 1st November of the year of appointment, whichever is earlier, provided that they report their arrival in India not later than the 31st December of that year. In the case of an officer who for whatever reason does not report his arrival in India until after the 31st December, service for increment will count from the date of such report. Probationers recruited in India shall draw pay from the date they report themselves for duty. All probationary Assistant-Superintendents shall draw their first increment after one year's service irrespective of whether they have passed the prescribed departmental examinations or not, but shall not draw the second increment until they have passed the examinations completely.