Some may have put a number somewhere, but the general idea is not unique. And of course, there is that """detail""": «during a regular /training/ operation». This is the humour of Crock (Bill Rechin, Brant Parker and Don Wilder): «Losing fourteen men on patrol bothering you Poulet? You are thinking of bettering it, but we do not have twenty-eight to spare».

More to the glacial reality, it is said that the notorious dictator who made the move in '39, once presented with a report of particularly heavy losses, after a pause said "After all, this is what the young are for". Some people can have so debatable ideas.

Yet it is still valid for their strategy during the invasion of Ukraine.

They don’t need sophisticated weaponry or artillery. Just a slow push until the opponent is exhausted.

Losses are irrelevant: they can always be hidden or denied because you control media.