 Complete the following phrase:  Jackson took over command of No. 75 Squadron after his brother was killed in action on 28 April 1942, leading it in the Battle of Milne Bay later that year. Credited with a fifth aerial victory, he became the RAAFs first ace in the New Guinea campaign, and was awarded the Distinguished Flying Cross DFC. By 1944, Jackson was wing leader of No. 78 Fighter Wing in 