Related Rule
New Zealand
Practice Relating to Rule 121. Location of Internment and Detention Centres
New Zealand’s Military Manual (1992) provides:
Camps must not be located near military objectives with the intention of securing exemption from attack for these objectives, and must be provided with the same protective measures against aerial attack as is the civilian population.
The manual adds:
The practice, common during World War I, of placing camps near military objectives as prophylactic reprisals on the ground that the enemy’s own forces had indulged in illegal activities is clearly forbidden. 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 922(1), note 65.
The manual further states: “Internment camps must not be located in areas particularly exposed to the dangers of war.” 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 1123(3).
With respect to non-international armed conflicts, the manual states that according to the 1977 Additional Protocol II, “places of internment or detention shall not be located close to the combat zone”. 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 1814(3).