John Gill Commentary Judges 20:22

"And the people, the men of Israel, encouraged themselves, and set the battle again in array in the place where they set themselves in array the first day." — Judges 20:22 (ASV)

And the people, the men of Israel, encouraged themselves
That though they had lost a great number of men, yet still their forces were large and greatly superior to those of Benjamin, and above all their cause was good:

and set their battle again in array
formed a line of battle again facing their enemy, inviting to another battle, and bidding defiance:

and in the place where they put themselves in array the first day ;
by which it seems they kept the field of battle; though they lost so many men, they did not flee before the children of Benjamin, but stood their ground; nor were they so superstitious as to fancy the place unlucky; nor was it a bad situation they were in, to which their want of success was owing, for then they would have changed it.