Looking on the internet deeply has found these results:

Further into the war is the most popular phrase on the web.

in further course of the war 10 results on the web	Further into the war 11,950 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.	Sep 4, 2013 ... Cruise missile strikes may not shift the battlefield, but it could embroil the U.S. further into the war while doing little to calm the refugee and�... At first, President Johnson was hesitant to draw U.S. troops further into the war. He claimed that American soldiers should not be fighting a war in Asia that�... Feb 3, 2015 ... The US, apparently, sees sucking Jordan further into the war as a benefit to them too. Exactly why isn't being stated, but with Jordan right along�... the Syrian government, the Opposition, the self Further into the war, Syria was torn among at least four warring factions proclaimed Kurdish enclave and the �...

in further course of the war

10 results on the web

Further into the war

11,950 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.

Sep 4, 2013 ... Cruise missile strikes may not shift the battlefield, but it could embroil the U.S. further into the war while doing little to calm the refugee and�...
At first, President Johnson was hesitant to draw U.S. troops further into the war. He claimed that American soldiers should not be fighting a war in Asia that�...
Feb 3, 2015 ... The US, apparently, sees sucking Jordan further into the war as a benefit to them too. Exactly why isn't being stated, but with Jordan right along�...
the Syrian government, the Opposition, the self
Further into the war, Syria was torn among at least four warring factions
proclaimed Kurdish enclave and the �...