On 23 March, Walkerdine, Maurice Mealing, Henry John Burden, and three other pilots all claimed a victory apiece by destroying a German reconnaissance plane over Moreuil.
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He scored his first aerial victory on 29 November 1917, when he destroyed a German DFW two-seater reconnaissance plane over Neuvireuil.
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Between 8 and 24 March, he bagged ten more wins, including another balloon busted, a reconnaissance plane shared with Captain William Spurrett Fielding-Johnson and another two-seater downed while teamed with Second Lieutenant Harold Walkerdine, Lieutenant Henry John Burden, and three other British pilots.