4If any officer or servant was temporarily absent from his employment during the late war whilst serving in His Majesty's forces, or the forces of the Allied or Associated Powers, either compulsorily or with the sanction or permission of the parish council, town council, or county council, as the case may be, such period of temporary absence shall be reckoned as service under the council in whose employment he was immediately before and after such temporary absence, and the amount of his salary, wages and emoluments during such temporary absence shall be deemed to be the amount which he would have received from the council during that period if he had remained in their actual service :
Provided that, in the case of an officer or servant who, after the armistice, voluntarily extended his term of service in the forces, no period of absence during such extension shall be reckoned.