Русско-англо-русский юридический словарь

The British civilian population during World War Two was mobilised in a way never seen before or since, living in a heavily regulated society and coming under sustained attack from the enemy. (bbc.co.uk)

Either of the parties may suspend performance of a Supply Contract during the occurrence of an Excusable Delay, which shall mean any delay not occasioned by the fault or negligence of the delayed party and which results from (without limitation) acts of God or public enemy, restrictions, prohibitions [...] (contracts.onecle.com)

A military secret is information about martial affairs that is purposely not made available to the general public and hence to any enemy, in order to gain an advantage or to not reveal a weakness, to avoid embarrassment, or to help in propaganda efforts (Wikipedia)

Scientists have identified a new weapon in the fight against a furry enemy that costs Australia $200 million a year in lost agricultural production. (Daily Mail)