I'm trying to find out a way I can concatenate a single cell with individual target cells. I can manually do this but is there a neat way of performing the task so I concatenate each cell from the target column into a new cell each containing the source cell and target cell strings.

For example:
CELL A1 =CONCATENATE(C1," ",D1)
CELL A2 =CONCATENATE(C1," ",D2)
CELL A3 =CONCATENATE(C1," ",D3)
and so on...
Then
CELL A50 =CONCATENATE(C2," ",D1)
CELL A50 =CONCATENATE(C2," ",D2)
CELL A50 =CONCATENATE(C2," ",D3)
and so on...