esprit de corps
From Longman Dictionary of Contemporary Englishesprit de corpses‧prit de corps /eˌspriː də ˈkɔː $ -ˈkɔːr/ noun [uncountable] FAITHFUL formal feelings of loyalty towards people who are all involved in the same activity as you SYN team spiritExamples from the Corpusesprit de corps• He was the guy who developed an esprit de corps among the committee members.• I saw for myself what you gain when you build esprit de corps among your salespeople.• But there was enough esprit de corps among our group to overcome this discomfort with a minimum amount of grumbling.Origin esprit de corps (1700-1800) French “group spirit”