More escort duties followed, but they were uneventful. Petard went into dry dock once more in Alexandria before passing through the Suez Canal, arriving in Trincomalee back at full war readiness. In January 1944 a fleet assembled in Alexandria and passed through the Suez Canal for deployment to the East Indies and the Pacific; Petard was in her usual escort role. Just after passing through a strangely quiet Suez Canal, Petard sighted and recovered the crew, complete with hand baggage, of the American Liberty ship Samslarnia in the eastern Mediterranean. This training preceded Operation Cockpit, a diversionary attack to reduce pressure on American fleets further east. In Operation Zipper, the planned re-occupation of Malaya, Petard was to be point ship. She was also involved in the uprising in Java; at one point ferrying Japanese prisoners of war from Tanjung Priok to an island near Singapore. On 10 February the two destroyers left a refuelling point at Addu Atoll and sailed west along the equator to rendezvous with the convoy. In all, Petard crossed the equator eight more times in the area of the Dutch East Indies before sailing once again to Trincomalee in late March 1946. Over two months later she returned to Portsmouth.

She was heading for the Far East once more. Her next job involved meeting the Richelieu in the Red Sea and escorting her (but only as far as Aden). With Paladin homeward bound for repairs, Petard sailed to Bombay, where she enjoyed a nine-day break before leading the River-class frigates Plym and Helford, the Dutch ship Derg and Convoy BA 66A to Aden. Her arrival in Trincomalee, Ceylon on 28 January was marked by the contrast between the immaculate fleet and the patches and rust stains on Petard and Paladin. She was declared for disposal in May 1964; under the 1965-1966 Naval Estimates, she entered Devonport dockyard on 31 January 1966 to de-equip and was broken up in 1967 by P. W. McLellan at Bo'ness. January 8: Count Ciano, Mussolini's one-time foreign minister, top sex escorts ambassador, and son-in-law, faces a tribunal for his role in the vote to oust Il Duce. On her return to Trincomalee in April, Petard was soon employed on sallies with capital ships in various groups. And perhaps most surprisingly, the young Lhamo seemed obsessed with Lhasa, Tibet's traditional and spiritual capital.

In Burbank, California, a Lockheed design team led by Hall Hibbard, and assisted by a young engineer named Clarence "Kelly" Johnson, immediately began a series of designs that would culminate in the contract-winning XP-38. Petard was kept busy with the aftermath of war; she led the cruiser Cleopatra and the Royal Indian Navy Bathurst-class corvette, Bengal, through a narrow swept channel in the Malacca Strait, which had been marked by three Indian Navy minesweeper flotillas, towards Singapore. The three ships opened fire with their main armament. Hussar made contact with a group of nine ships of Convoy PQ 13 and a whaler, escorted by two Russian destroyers and a trawler. She arrived at Devonport on 29 April 1953 under tow from Envoy; two days later she was towed to Belfast, arriving on 4 May. After an overnight stop in Plymouth, Petard arrived in Portsmouth on 16 August 1944 bearing a total of 49 patches on her hull.

Paladin complied and turned away from her intended 'victim', but her momentum took her broadside into the submarine's hydroplane, opening a gash 15 ft (4.6 m) long in Paladin's hull. Petard and Paladin (which had been picking up survivors), engaged the submarine with their four-inch main armament. Petard stopped firing when Paladin adopted a course to ram the Japanese vessel. Following repairs and refit in dry dock, Petard set out for the naval base at Scapa Flow with a new crew in early 1945. En route she had 13 Asdic contacts with German U-boats in the Irish Sea, firing patterns of depth charges without result. Her guns and men with rifles were kept busy, firing many rounds at the floating mines that were released. Petard pulled away to engage the submarine with her four-inch guns once more, but this was also ineffective: hits were registered, but they were with impact-fuzed shells due to the lack of SAP ammunition. Aircraft on Cos were engaged by her four-inch guns. A typical engagement involved locating a submarine with radar or visually by aircraft on patrol, strafing by a fighter forcing the submarine to dive, and bomber attack immediately after the sub left the surface.