Serious and thoroughgoing measures were taken for its defence, and an adequate army was left under a capable commander. Men could breathe freely once more. But the breathing space lasted less than fifteen years. The usurpation of the tyrant Maximus brought new calamities to Britain. Maximus assumed the purple (A.D. 383) by the will of the soldiers, who were ill-satisfied with the government of Gratian; and if the provincials approved of this rash act, they perhaps hoped that Maximus would be content with exercising authority in their own island. But even if Maximus did not desire a more spacious field for his ambition, such a course was perhaps impracticable. It would have been difficult for any usurper to maintain himself, with the adhesion of Britain alone, against the power of the lord of the West. Probably the best chance of success, the best chance of life, for the tyrant lay in winning Gaul. And so Maximus crossed the Channel, taking the army, or a part of it, with him. His own safety was at stake; he recked not of the safety of the province; and whatever forces he left on the shores and on the northern frontier were unequal to the task of protecting the island against the foes who were ever awaiting a propitious hour to pounce upon their prey. Bitterly were the Britons destined to rue the day when Maximus was invested with the purple. Denuded of defenders, they had again to bear the inroads of Pict, Saxon, and Scot. Rescue came after the fall of Maximus (A.D. 388), and the son of their former defender, the Emperor Theodosius, empowered his most trusted general, Stilicho, to make all needed provision for the defence of the remote province. The enemies seem to have escaped, safe and sated, from the shores of Britain before the return of the army; no fighting devolved on Stilicho; he had only to see to works of fortification and defence. But it was high time for legions to return; Britain, says a contemporary poet, was well-nigh done to death. [Sidenote: BIRTH OF PATRICK]