He continued to fight with distinction in the war, and then with money from friends in Ireland, sailed for England where he hoped to buy a commission in the army. However the stain of his conviction followed him, and the other officers refused to serve with him, until the dying Corporal confessed that he had in fact stolen the gun. Roche was vindicated overnight and returned to Dublin a hero, where he was offered a Lieutenancy in a new regiment. His status was further boosted after he raised a unit to patrol the streets at night against a particularly vicious brand of criminals active at the time. After the Treaty of Paris in 1763 Roche was forced to retire from the army and move to London, where he married the wealthy Miss Pitt, but later squandered her money and she divorced him. Roche ended the affair in debtors' prison, until his own inheritance freed him. Roche idled along in London until friends asked him to stand for Parliament, though he declined the offer. In 1773, though, he accepted a captaincy in an infantry regiment and sailed for India. There were disagreements aboard the ship and Roche fell out with the Captain and other gentlemen aboard. When they landed at the Cape of Good Hope Roche called on Captain Ferguson's house, who was later found dead behind it. Roche fled, but was caught, tried and acquitted by the Dutch. He continued to Bombay where the British arrested him; he opposed the legal grounds of his trial, but he was returned to London to stand trial in the Old Bailey in December 1774. He was again acquitted. The case is the last trace Roche left.