Source: Per record of promotion in service file of David Campbell, reg. no. 53002.
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Letts, Mearl Mott: Service no. 53246
War Diary of the 18th Battalion CEF
Articles, war diaries, and recognition to the Men of the "Fighting 18th"
Source: Per record of promotion in service file of David Campbell, reg. no. 53002.
Find-A-Grave
War Diary of the 18th Battalion CEF 