Albert Barnes Commentary Joshua 10:21

"that all the people returned to the camp to Joshua at Makkedah in peace: none moved his tongue against any of the children of Israel." — Joshua 10:21 (ASV)

Joshua himself remained at Makkedah with the guards set before the cave. The other warriors would not return from the pursuit until the evening of the overthrow of the Amorites; and the execution of the kings and the capture of Makkedah itself belong, no doubt, to the day following (Joshua 10:27–28).

None moved his tongue - See the marginal reference and note.