Generally, in WWI nobody knew what to do when the prewar plans failed. The war itself greatly overwhelmed just about everybody in charge. The immense scope was simply too much for people who were men of a previous century.Amen to that! What were they thinking? What were they smoking? What did they expect would happen? And what would they do if the "Risk Fleet" failed to deter the RN? Geez, it boggles the mind.
The amazing thing to me is Germany's complete lack of strategic focus justs before and all during WW1. This at the height of Prussian military domination in all things. But they couldn't make up their minds as to what to concentrate on, how to pursue the war, and what to do if the prewar plans (both naval and army) failed. So much for the stereotypically precise Prussian military focus, eh?
As one historian rightly put it - "the 19th Century died on the fields of Belgium, France and Poland".