I was thinking that when watching Rogue One I did not hear or see any mention of Admiral Ackbar during the film. On further investigation I found no mention of Scarif on his Wookieepedia page or of him on the Battle of Scarif page. So where was Admiral Ackbar while the Battle of Scarif was raging?
1 Answer
We don't know where he physically was, but he was apparently unable to adequately provide support in the battle.
Accordining to Star Wars: The Rebel Files, his forces were "Shorthanded, behind schedule, underequipped, and hardly in a position to supplant Raddus and bolster the rebel fleet."
Ackbar was in the original script for the 2016 film Rogue One: A Star Wars Story but the part was ultimately changed to Admiral Raddus after Ackbar appeared in the 2015 film Star Wars: Episode VII The Force Awakens