In this context, would our friends from the USA say that the USA was evil when it let loose a bombing campaign over North Vietnam by dropping Napalm bombs or Agent Orange? Would our British friends say that Britain was evil when general Dyer ordered his troops to open fire on defenceless people gathered in an enclosure at Amritsar, Punjab with only one access and the same as exit which was being guarded by his soldiers manning machine guns and rifles? And killed hundreds at least? Would the British friends say that the British people who honoured this General for his action and presented a purse to him were evil? Would my Indian friends consider Udham Singh who killed Sir Michael O'Dwyer and wounded General Dyer in London in revenge years later as evil? War is war and morals are not involved.
Personally though I would reserve 'evil' for something special, things done in fear or anger or panic or in war maybe, where there is always the fear of losing, can be very wrong.
However evil I reckon is something colder, more calculated, like Hitler and his cronies sitting down and calmly planning to murder millions of people, just because of who they were. As Linschoten says, if that isn't evil the word has no use at all.