It woukd be the 4th great ninja war. And The Sand Ninja’s were trying to hold off Madara from the Edo Tensei graveyard. As they were fighting off some of the rouge hired Ninja until claiming a part of the territory. As gaara would be regrouping with the other five kage. Then looking seeing someone dash over as he saw…Wally?!

Gaara: As he saw Wally his friend on the battlefield his eyes widened as he yelled. “You! WHAT THE HELL ARE YOU DOING ON THE BATTLEFIELD!”