SMArt 155
SMArt 155 is a cannon-launched guided projectile or ammunition model.
Overview
German anti-vehicle "smart" artillery round.
In detail
It is associated with Germany.
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
“SMArt 155”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q501279: SMArt 155
Consult the source