Snafu himself stops him, because he doesn't want to let Sledge lose his humanity. He tries to get Sledge to back away from the corpse by telling him that the Japs have diseases, so Sledge cuts off a unit insignia instead.

Did Sledge and Snafu meet again?

He was married to Gladys Bowman-Shelton until his death and they had two sons, Allen and Floyd; the latter of which died before his father, in 1990. He and Sledge did not speak for over thirty-five years until he read Sledge's book and the two reunited. Shelton died on May 3, 1993 in Jackson, Louisiana.

What happened to sledgehammer in the Pacific?

Death. Sledge died after a long battle with stomach cancer on March 3, 2001.