Switzerland
Practice Relating to Rule 16. Target Verification
Switzerland’s Basic Military Manual (1987) states: “Only specific and duly identified military objectives may be attacked.”
Switzerland’s Regulation on Legal Bases for Conduct during an Engagement (2005) states:
12.5 Precautionary measures
165 The following precautionary measures must be taken into consideration when making decisions, when issuing orders and in particular when conducting military operations.
166 Anyone who attacks:
1 must make sure that the objectives of the attack are neither civilians nor civilian objects.

[emphasis in original]
In 2005, Switzerland withdrew its reservations to Articles 57 and 58 of the 1977 Additional Protocol I.