Brandt Model 27/31
Brandt Model 27/31 is a 81 mm mortar or artillery model.
Also recorded as Brandt 81 mm; mle 27/31; Model 1927/31; 81 mm mortar Brandt Mle 27/31; 81mm Mortar Mle 27/31.
Overview
1930s portable 81 mm mortar of French origin.
In detail
It is associated with France.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Brandt Mle 27/31”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q630329: Brandt Model 27/31
Consult the source