Question: What unofficial ceasefires along the Western Front of World War I were described by Sir Edward Hulse in letters published posthumously?
Sentence (from "Christmas truce"): The Christmas truce (German: "Weihnachtsfrieden" ; French: "Trêve de Noël" ) refers to a series of widespread but unofficial ceasefires along the Western Front of World War I around Christmas 1914.
Relevant evidence: Yes