feu de joie
Concise Oxford English Dictionary © 2008 Oxford University Press:
feu de joie /ˌfəː də ˈʒwɑː/
▶noun (pl. feux de joie pronunc. same) a rifle salute fired on a ceremonial occasion, each soldier firing in succession along the ranks.
– origin Fr., lit. ‘fire of joy’.
'feu de joie' also found in these Oxford entries:

