Operation Lilliput (World War II) was the name given to a convoy operation directed by G.H.Q. Operations Instructions Number 21 of 20 October 1942 for transportation of troops, weapons, and supplies in a regular transport service between Milne Bay and Oro Bay, New Guinea between 18 December 1942 and June 1943 in order "to cover reinforcement, supply, and development of the Buna-Gona area upon its anticipated capture" by the Australian 7th Division and the United States Army's 32d Division. Within six months, the convoys, escorted by Royal Australian Navy corvettes and largely composed of Dutch KPM merchant ships, had delivered 60,000 tons of supplies and 3,802 troops from Milne Bay to Oro Bay. Corvettes provided the majority of the escort force. Losses during Imperial Japanese air attacks amounted to two merchant ships, and , sunk and two badly damaged while several of the corvettes also sustained damage and casualties.