lors de

during, at the time of

Première Guerre mondiale

First World War

la

• Article

  the (definite article)

• Pron
• Noun

commune

• Noun

  commune (administrative subdivision)

• Adj

bataille

1. battle
2. war (card game)

de la

1. of the
2. some; the feminine partitive article

Marne

1. Marne (a department of Grand Est, France)
2. Marne (a right tributary of the Seine, in eastern France)

guerre

war