+1 to 21eR.
We have an inconsistent level of hierarchy in the question.
What was more important, the battle of Stalingrad or the Eastern Front?
What was more important, the battle of El Alamain or the Western Desert?
What was more important, the battle of the Atlantic, or the battle of the River Platte?
How could we possibly come up with rational answers?
Compare El Alamein to the Battle of the River Platte.
Maybe compare Stalingrad to Operation Drumbeat. I can think about that comparison, and decide if I think Stalingrad was more important than Drumbeat.
Comparing Stalingrad to the "Battle of the Atlantic" -- how could I NOT say that a 4 year theater of operations was more significant than a 6 month campaign? Was the Eastern Front more significant than the River Platte? Of course it was!
But compare the "Battle of the Atlantic" to the Eastern Front, and I face a question that merits a fair bit of thought.
-Mark
(aka: Mk 1)