It taught the British army its trade "Haig-style" which is to say blundering headlong assaults relying on artillery prep resulting in massive casualties and no discernible strategic gain. You are correct that the British managed to maintain a slightly superior casualty ratio, but that was a little consolation at a time when Britain's French and Russian allies were clearly on the ropes.Originally posted by Top Cat
The Somme taught the British Army it's trade and after the disastrous campaign opening the British emerged with new tactical doctrine and more experienced soldiers. Their performance after the Somme was excellent.
As for learning lessons and improving performance, the major campaign of Passchendaele the following year demonstrated that Haig and the British command had learned nothing and perhaps regressed.
No I'm just saying they shouldn't have insisted on "winning" themselves by delivering an ultimatum demanding reparations. Instead they should have opened up serious negotiations for an eventual settlement based on the status quo ante. I don't see how the latter could be seen as "letting the Germans win"What you are effectively saying is that in 1916 the Allies should have let the Germans win.