noun
joint memorial service for the war dead
A formal ceremony held jointly by multiple groups to honor those who died in war.
今年も各地で合同慰霊祭が営まれた。
Joint memorial services for the war dead were held in various places again this year.
A memorial service for the dead in general, not necessarily for war dead or jointly organized.
Compound of 合同 (joint) + 慰霊祭 (memorial service).