The third German offensive was on the sea, but no operation in the war remains more obscure with regard to its motives, conduct, and importance than the battle of Jutland; a century passed before Nelson's tactics at Trafalgar were made clear, and a long period may have to elapse before there is any solution of the problems surrounding the great naval battle of modern times. The British admiral in command has expressed his considered opinion that the meeting of the German and British fleets on 30 May was an accident; but assuredly it was not by accident that the whole naval forces of Germany were on that day outside their accustomed harbours, and they could not have been brought into action against their own consent. There was some motive in that unusual appearance, and the motives of strategy are to be found in the conditions of policy. That Germany needed a victory in 1916 is obvious from her persistence, despite the gravest losses, in the Verdun campaign; but if she needed one over France, she needed one yet more sorely over Britain; and if it was worth while losing one or two hundred thousand men at Verdun, it was worth while taking considerable risks at sea on the chance of frustrating British participation in the coming offensive on the Somme. Deliverance from the nightmare of a combined Entente offensive was but a part of the fruits which would follow from a German victory at sea. It would probably decide the issue of the war at a single blow. Germany had, of course, known all along that the Entente depended absolutely for success upon Great Britain's command of the sea; but it was not easy to shake that command, and so long as there seemed a prospect of winning the war by other means, the frightful risks of a naval battle would be avoided. By the spring of 1916 those other means were receding beyond the region of hope or possibility. Russia was repairing her arms; Great Britain was making stupendous preparations; France had withstood the shock of Verdun; and the hopes which Germany built on discontent in Ireland, her intrigues with Irish prisoners of war, and the escapades of Sir Roger Casement, crumbled after the insurrection which broke out in Dublin in April. The autumn promised a sere and yellow leaf to the German High Command. Nor did this darkened European vista exhaust the clouds on the horizon. After the torpedoing of the Sussex on 24 March President Wilson had extorted from the German Government a pledge not to sink without warning merchant vessels found inside or outside the war zone which the Germans had proclaimed in February, and had refused to accept the condition they sought to attach to the pledge, that he would require corresponding pledges from Great Britain to observe the "freedom of the seas." Tirpitz had been dismissed to give verisimilitude to Germany's new virtue; but she had no intention of keeping her pledge any longer than was convenient, or abandoning any reasonable prospect of bringing us