I decided to check this out and found this (ludicrous): WT 1956 8/1 p. 465: "With such a glorious feast of victory concluded, only the bones, bones from one end of the earth to the other, will be left for burial. What a task that will be for the survivors, to cleanse the earth of every remaining evidence of Gog’s forces! Even with the work well organized it will take seven months, Jehovah says, just to bury the bones. Scouting corps will be sent out on a full-time basis to search the land thoroughly and, when bones are found, markers will be set up for those with the spades and shovels who follow. (Ezek. 39:14, 15) Those privileged to share in that cleanup work will not view it as a revolting and disgusting assignment but will rejoice to be alive when Gog’s long and oppressive rule has come to an end and when the wicked are no more. Survivors of Armageddon will be happy and will greatly rejoice to have a share in preparing the earth for a global paradise of beauty and perfection under the reign of the King Christ Jesus. But first, before that happy day, this message against Gog must be delivered in its completeness." Could be why some older jws in the past thought this.
But in WT1973 6/1 p. 346 "But the animals could never dispose of all those slain at Har–Magedon. Hence, the Almighty God will doubtless use some highly scientific means at his disposal to get rid of the surplus of the decaying bodies in a speedy and sanitary way. We remember that Noah and his seven fellow survivors of the global deluge were not burdened with burying the human victims of that world catastrophe after they came out of the ark and renewed Jehovah’s worship on earth (note word doubtless)