The team has a strong esprit de corps.
esprit de corps
idiomA shared spirit of comradeship, enthusiasm, and devotion to a cause among the members of a group, for example of a military unit.
Origin
disputed originUnadapted borrowing from French esprit de corps, from esprit (“spirit”) + de (“of”) + corps (“body”).
The captain gave a speech to boost the team's esprit de corps before the final match.
The long months of shared hardship in the field fostered an unbreakable esprit de corps among the soldiers, binding them together through every challenge they faced.