Club in the Third XI and took 6/16. After five games he was promoted to the Second XI, and made his first grade debut in the last game of the 1939–40 season. The following season, when nineteen, he was selected for Victoria's Sheffield Shield match against Queensland, but the Pearl Harbor attacks forced the cancelation of competitive cricket and the match did not go ahead. Johnston joined the Royal Australian Air Force along with his brother, serving for four years as a radar technician in northern Australia. It was at training camp that he first met Keith Miller. Johnston was not posted overseas, unlike his brother, who died in a plane crash in Ireland. First-class and Test debut Prior to World War II, Johnston was a slow-medium and left-arm orthodox spin bowler, but during a practice session, he bowled a quicker ball to Jack Ryder a former Australian captain and Test batsman, who was now a Victorian and national selector. This prompted Ryder to wage a personal campaign to induce Johnston to become a pace bowler. At the same time, Richmond captain Jack Ledward wanted him to bowl spin. Upon the resumption of first-class cricket in 1945–46, Johnston made his first-class debut against Queensland and was entrusted with the responsibility of opening the attack. His maiden wicket was that of leading Test batsman Bill Brown. Johnston took a total of 1/84 in a ten-wicket win. He felt that the fast bowling was only for short periods with the new ball, and that he would be allowed to revert to spin bowling as the ball became older. He played a total of seven matches for the season and took 12 wickets at 35.08, with his best performance being 4/43 against arch-rivals New South Wales. As a result, he missed the national selection for the tour to New Zealand. As opportunities for slow bowling became infrequent, he contemplated retirement. Although he dismissed Cyril Washbrook in the first over of Victoria's match against Wally Hammond's touring England team of 1946–47, he was skeptical about his pace bowling. After that match he did not take a wicket for the next two months. It took further encouragement from Australian captain Don Bradman after he played against Bradman's South Australians. Bradman told Johnston that the selectors thought highly of his potential as a medium-fast bowler to reinforce the short bursts of pace spearheads Ray Lindwall and