Looking on the internet deeply has found these results:

A terrible war is the most popular phrase on the web.

A dreadful war 113,100 results on the web	A terrible war 1155,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	We have seen where it led in Iraq, where a terrible war took place following atomic armament based originally on civilian technology. 1996, for the last eighteen months it has again been the victim of Russian Jack was a man who fought a terrible war, defeating all but one of the evil giants. Every year... in the sad month of November the Swabians gathered to commemorate a terrible war in their history. Mr President, a terrible war is going on in Europe. After a terrible war in the period 1994 The UN declaration we are celebrating today was the outcome of a terrible war. After a terrible war, both parties claimed to represent the whole of China.

A dreadful war

113,100 results on the web

A terrible war

1155,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

We have seen where it led in Iraq, where a terrible war took place following atomic armament based originally on civilian technology.
1996, for the last eighteen months it has again been the victim of Russian
Jack was a man who fought a terrible war, defeating all but one of the evil giants.
Every year... in the sad month of November the Swabians gathered to commemorate a terrible war in their history.
Mr President, a terrible war is going on in Europe.
After a terrible war in the period 1994
The UN declaration we are celebrating today was the outcome of a terrible war.
After a terrible war, both parties claimed to represent the whole of China.