Related Rule
Côte d’Ivoire
Practice Relating to Rule 14. Proportionality in Attack
Section B. Determination of the anticipated military advantage
Côte d’Ivoire’s Teaching Manual (2007) provides in Book IV (Instruction of heads of division and company commanders):
The military advantage at the moment of attack is the advantage anticipated from the operation or from the military campaign of which the attack is a part, considered as a whole, and not only from isolated or particular parts of that campaign or that operation.
There is a concrete and direct military advantage if the commander reasonably and honestly anticipates that the attack contributes to the success of the operation as a whole. 
Côte d’Ivoire, Droit de la guerre, Manuel d’instruction, Livre IV: Instruction du chef de section et du commandant de compagnie, Manuel de l’élève, Ministère de la Défense, Forces Armées Nationales, November 2007, p. 27.