A 1914 Brittany earthquake could turn mobilization into disaster relief

What if Brittany suffered a magnitude 7.5 earthquake in July 1914?

It could cripple French and British coastal infrastructure, disrupt naval readiness, and either invite German opportunism or entangle Germany in disaster relief.

A magnitude 7.5 earthquake in Brittany would devastate local infrastructure and likely produce dangerous water effects along the south coast of Britain and into the Channel. French naval facilities and some Royal Navy assets could be damaged just as the July Crisis was unfolding. Germany might see an opportunity, but Kaiser Wilhelm could instead scatter German personnel and ships through an ambitious relief effort. The counterfactual therefore changes not only fleet strength but also whether states are politically and logistically positioned to begin the war on the historical schedule.