Same meaning?
He was an intermediary with the United States Olympic Committee and was a member of the United States Postal Service arbitration panel .
He was a mediator with the United States Olympic Committee and was an arbitration panel member with the United States Postal Service .

Answer: yes

Same meaning?
During the Vietnam War , the 104th Field Battery also served with the 12th Field Regiment -- to which the 161st Field Battery RNZA was also attached .
During the Vietnam War , the 104th field battery also served with the 12th field regiment , which was also assigned to the 161th field battery RNZA .

Answer: yes

Same meaning?
Dunkerton moved to London from Herefordshire at the age of 14 .
Dunkerton went from London to Herefordshire at the age of 14 .

Answer: no

Same meaning?
The cumulative file version of SP2 is full -- SP1 does not have to be installed -- while the client version requires SP1 to be installed .
The cumulative file version of SP2 is full -- SP1 does not need to be installed -- while SP1 needs to be installed for the client version .

Answer:
yes