軍ぐん配ばいを返かえす

Meanings

1

expression, godan verb (-su)

start a sumo bout by turning the referee's fan

sumo

Sumo term: the referee (gyōji) signals the start of a match by flipping his war fan (gunbai).

軍army, force, troops

配distribute, spouse, exile

返return, answer, fade

軍ぐん配ばい
Refers to the referee's fan itself, not the action of starting a bout.
軍ぐん配ばいが上あがる
Means 'to be declared the winner' (literally 'the fan is raised'), a different sumo-derived idiom.

From sumo, where the referee (gyōji) uses a war fan (gunbai) to signal the start of a match. The expression literally means 'to turn the gunbai'.