There hasn’t been a reduction in accidental deaths in the military. They just aren’t shown for the last two years on this graph. The accidental deaths, deaths from illness, and self inflicted deaths have remained fairly constant. The only increase in deaths is the number who have died in combat, which are already well known.
Accidental deaths in 1980 - 1556; in 2006 - 465.
Deaths due to illness in 1980 - 419; in 2006 - 205.
Self inflicted deaths in 1980 - 213; in 2006 - 155.