The cause of death will be noted on his Death certificate in the DR, if in fact the victim of murder by a civilian...
You can get one there if you want...
Also you can't get a conclusive report from the US military, since many US soldier's deaths were not certified by Dominican authorities at the time, after it was too many to their expected tally. Some of those deaths were reported as KIA in Vietnam or other theaters were US forces were deployed at the time...
What unit was your cousin deployed in the DR at the time? Rank? Service?
Here are some facts:
The Dominican government, nor any foreign government for that matter will have
nothing to do with the death of any soldier during military operations as far as death certificates go. A fallen soldier's remains will be sent back to the States and the burial will be coordinated with the family. A soldier killed during off duty hours will certainly have his case investigated by the local government reporters, but utimately the remains of the soldier are the sole property of the US government, which will still issue a death certificate. It seem very unlikely that any forein government would bother to issue a death certificate for an active duty US soldier - if there were criminal circumstances involved, a final police report would suffice.
Pichardo, the comment about the US governemt lying to cover up the amounts of deaths is unfounded as well. No offense, compadre, but you are start to sound like an ex poster Mirador who seemed to know everything about everything and everyone, yet never had any type of reliable source to back him up.