We know that war is hell. But it doesn’t ever make us stop doing it

There’s a plausible theory — recently rehearsed in the BBC’s excellent two-part documentary The Lion’s Last Roar? — that our war in Afghanistan was largely the creation of the Army, which sorely needed a renewed sense of military purpose after the debacle in Iraq. As a taxpayer, this appals me. As the parent of a boy approaching conscription age it horrifies me. But as an Englishman, it doesn’t half make me proud that we’ll still do anything — up to and including embroiling ourselves in a futile conflict — rather than admit we’re finished as a fighting nation.

Though we joke about having beaten Germany twice at their national sport in the first part of the 20th century, the truth is that we need our wars at least as much as they do. Yes, we know that war is hell: we’ve seen Saving Private Ryan and Fury; we’ve watched the funeral processions at Royal Wootton Bassett; we’ve been steeped since school in the poetry of Owen and Sassoon.