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Netherlands
Practice Relating to Rule 116. Accounting for the Dead
Section B. Recording of the location of graves
The Military Manual (1993) of the Netherlands provides:
As soon as circumstances and the relation between the parties to the conflict permit, the parties, in whose territories graves of the persons who have died as a result of hostilities are located, shall conclude agreements in order … to facilitate access to the gravesites. 
Netherlands, Toepassing Humanitair Oorlogsrecht, Voorschift No. 27-412/1, Koninklijke Landmacht, Ministerie van Defensie, 1993, p. VI-3.
The Military Manual (2005) of the Netherlands states:
As soon as circumstances and the relations between the parties to the conflict permit, the parties whose territory contains graves of persons who died during the conflict must conclude agreements in order:
- to facilitate access to the graves for family members and officials of graves associations; … 
Netherlands, Humanitair Oorlogsrecht: Handleiding, Voorschift No. 27-412, Koninklijke Landmacht, Militair Juridische Dienst, 2005, § 0610; see also § 0751 (prisoners of war).