"This round, I'm going to play air superiority and destroy any tanks I see."
"This round, I'm going to take B and stick to the building between B and C and cover them both."
"This round, I'm going to cover A so I can out-flank the flankers running towards the killing zone at B."
"This round, I'm going to use my newly-gotten ATGM for the IFV to truly wreck somebody's day."
If you're expecting wars with clearly defined front lines, play an tight map with horrible bottlenecks like Operation Metro or Seine Crossing. Personally, however, I hate them, because they tend to get filled with mortars and snipers and it's a rush to see who can get to a point first so that the rest of the game can devolve to basic sector denial.