A barrage refers to any sort of
tiebreaking
fencing match held because
of equal standing or scores.
In a 5 touch bout, if the scores are equal after 4 minutes of fencing,
a one minute barrage will usually be held after determining priority.
In a 15 touch bout, if the scores are equal after all three periods
of fencing, a one minute barrage will usually be held after determining
priority.
A barrage to determine 3rd place in a direct elimination bracket may
be held in the form of a 15 touch bout or a 5 touch bout.
A barrage to determine seeding in case of equal rankings coming out
of a pool round is usually in the form of a 5 touch bout or by random chance.