Rule 1 Order XXVIII of Code of Civil Procedure 1908 "Officers, soldiers, sailors or airmen who cannot obtain leave may authorize any person to sue or defend for them"
(1) Where any officer, soldier, sailor or airman actual
serving under the Government in such capacity is a party to
a suit, and cannot obtain leave of absence for the purpose
of prosecuting or defending the suit in person, he may
authorize any person to sue or defend in his stead.
(2) The authority shall be writing and shall be signed by
the officer, soldier, sailor or airman in the presence of
(a) his commanding officer, or the next subordinate officer,
if the party is himself the commanding officer, or (b) where
the officer, soldier, sailor or airman, is serving in
military, naval or air force staff employment the head or
other superior officer of the office in which he is
employed. Such commanding or other officer shall countersign
the authority, which shall be filed in Court.
(3) When so filed the countersignature shall be sufficient
proof that the authority was duly executed, and that the
officer, soldier, sailor or airman by whom it was granted
could not obtain leave of absence for the purpose of
prosecuting of defending the suit in person.
Explanation-In this Order the expression "commanding
officer" means the officer in actual command for the time
being of any regiment, corps, ship, detachment or depot to
which the officer, soldier, sailor or airman belongs.
Rule 2 Order XXVIII of Code of Civil Procedure 1908 "Person so authorized may act personally or appoint pleader"
Any person authorized by an officer, soldier, sailor or airman to prosecute or defend a suit in his stead may prosecute or defend it in person in the same manner as the officer, soldier, sailors or airman could do if present; or he may appoint a pleader to prosecute or defend the suit on behalf of such officer, soldier, sailor or airman.
Rule 3 Order XXVIII of Code of Civil Procedure 1908 "Service on person so authorized, or on his pleader, to be good service"
Processes served upon any person authorized by an officer soldier, sailor or airman under rule 1 or upon any pleader appointed as aforesaid by such person shall be as effectual as if they had been served on the party in person.