> That grandfather was in the shit in the Phillipines and feels that we
> would have lost too many soldiers invading Japan, so dropping the H
> bombs was the right thing to do.
The first hydrogen bomb ("H bomb" aka fusion weapon) was detonated on 1 November, 1952 at Eniwetok atoll. The Soviet Union detonated their first on 12 August, 1953.
Dropping a thermonuclear ("hydrogen") weapon on Japan would have been quite a bit more devastating that what actually happened (fission weapon). For reference, the Trinity shot was about 19kt, Little Boy (Hiroshima) was estimated at 15kt, Fat Man (Nagasaki) is estimated at 20kt.
"Mike", the first H bomb, was 10.4 megatons, nearly 500 times more powerful than Fat Man.
/jordan