相关规则
Canada
Practice Relating to Rule 141. Legal Advisers for Armed Forces
Canada’s LOAC Manual (1999) provides:
As a party to [the 1977 Additional Protocol I], Canada has the obligation to ensure that legal advisors are available to advise military commanders on the application of the LOAC and the appropriate instruction to be given to the CF [Canadian Forces]. Legal officers with the Office of the Judge Advocate General fulfil this mandate. 
Canada, The Law of Armed Conflict at the Operational and Tactical Level, Office of the Judge Advocate General, 1999, p. 15-2, § 8.
Canada’s LOAC Manual (2001) states in its chapter entitled “Preventative and enforcement measures and the role of protecting powers”:
As a party to [the 1977 Additional Protocol I], Canada has the obligation to ensure that legal advisors are available to advise military commanders on the application of the LOAC and the appropriate instruction to be given to the CF [Canadian Forces]. Legal officers with the Office of the Judge Advocate General fulfil this mandate. 
Canada, The Law of Armed Conflict at the Operational and Tactical Levels, Office of the Judge Advocate General, 13 August 2001, § 1505.
Canada’s Use of Force Manual (2008) states:
105. OTHER LEGAL CONSIDERATIONS APPLICABLE TO OPERATIONS
3. Strategic Guidance and Direction. The strategic-level guidance provided to the commander and any direction on the use of force (such as ROE [rules of engagement]) authorized for the operation must be based upon legal considerations and requirements. There also must be a clear and coherent link between the approved political objectives, military objectives, the legal basis for the operation, the commander’s concept of operations, and the ROE which are authorized for the operation. Therefore, legal staff shall be involved in the planning process at all levels. 
Canada, Use of Force for CF Operations, Canadian Forces Joint Publication, Chief of the Defence Staff, B-GJ-005-501/FP-001, August 2008, § 105.3.