On 29 November 1941, "Jupiter" and the destroyer detached from the Mediterranean Fleet, joined up with Force G at Colombo, and the five ships sailed later that day. They rendezvoused with the battlecruiser at sea, and set course for Singapore, where they arrived on 2 December. They spent a few days there with shore leave and refit, while waiting for orders. On 1 December, it was announced that Sir Tom Phillips had been promoted to full Admiral, and appointed Commander-in-Chief of the Eastern Fleet. A few days later, "Repulse" started on a trip to Australia with the destroyers "Vampire" and "Tenedos", but the force was recalled. It was not until nine days later that "Tenedos" and "Repulse" would join Phillips' Force Z in attacking the Japanese invasion force, and he himself would perish when both "Repulse" and the battleship "Prince of Wales" were bombed and sunk by Japanese land based bombers. During her campaign in the Pacific, "Jupiter" was commanded by Lieutenant Commander Norman V. J. T. Thew.