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France
Practice Relating to Rule 8. Definition of Military Objectives
Section A. General
France’s LOAC Teaching Note (2000) states:
Military objectives are those military units and objects which by their nature, location, purpose or use make an effective contribution to military action and whose total or partial destruction, capture or neutralization, in the circumstances ruling at the time, offer a definite military advantage. 
France, Fiche didactique relative au droit des conflits armés, Directive of the Ministry of Defence, 4 January 2000, annexed to the Directive No. 147 of the Ministry of Defence of 4 January 2000, p. 2.
France’s LOAC Manual (2001) states:
Regarding objects, military objectives are limited to those objects which by their nature, location, purpose or use make an effective contribution to military action and whose total or partial destruction, capture or neutralization, in the circumstances ruling at the time, offer a definite military advantage. 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 90.
Upon ratification of the 1977 Additional Protocol I, France stated that the term “military advantage” as used in Article 52(2) of the Protocol was understood to refer to “the advantage expected from the attack as a whole and not from isolated or particular parts of the attack”. 
France, Reservations and declarations made upon ratification of the 1977 Additional Protocol I, 11 April 2001, § 10.