Bombs don’t discriminate,but the building of anti-aircraft sites protecting Hanoi,and prohibiting their destruction until they were operational because Russians were assisting in their construction might give you an answer to part of your question
I meant, who were the men the Army was killing with small arms fire at the compound that Bull Simon’s team landed at, not the bombs, the men have always been described as Russian or Chinese.
The Navy was using flares instead of bombs when they harassed the Haiphong area.