Practice Relating to Rule 50. Destruction and Seizure of Property of an Adversary
Sweden’s IHL Manual (1991) states: “According to [the 1907 Hague Regulations], it is prohibited to destroy or confiscate an enemy’s belongings so long as this is not absolutely necessary as a consequence of the demands of war.”
The manual adds: “In most cases, property of importance for the adversary’s military operations can be eliminated by destruction or confiscation (= capture).”
The manual also regards “illegal, extensive and arbitrary destruction and appropriation of property where this is not justified by military necessity” as a grave breach of the 1949 Geneva Conventions.