Ack Emma refers to the abbreviation A.M. from the Latin ante meridiem, meaning "before midday" in the 12-hour clock. It is from the Signallers' vernacular of two separate words Ack (A) and Emma (M).[1]
References / notes
- ↑ Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.1.
The above term is listed in our Compendium of the Great War.
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