To Dig in was to secure or consolidate a soldier's own position in some form of desirable occupation or billet. Suggested by the term of "digging in" or "entrenching," troops would consolidate a captured position, whereby it was imperative to hold it against all counter-attacks "at all costs." In many cases this was the cause of further loss of life. 
References / notes
- Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.77.
Glossary of terms and customs
This page forms part of our glossary of words and phrases of the Armed Forces of the United Kingdom of Great Britain during the Great War, which also includes: technicalities, trench slang, expressions in everyday use, nicknames, sobriquets, the titles and origins of British and Commonwealth Regiments, and warfare in general. Please feel free to help expand and improve this content.
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