People keep saying some things are better for blue and other things are better for green... What do they mean?

Blue people like bridges and tunneling behind enemy's... Green like to make elaborate trench and castle systems, leaving it hard for blue to attack. Yesterday, green made a pretty good trench/ defence system on the server i was playing, fortunatley there were some good shots on my team, and we overtook it eventually, then they re-took it, and then our cave defences opposing their tower, so we flanked them!

Thanks

Greens spawn near a river and Blue spawns high up in the mountains.

This gives Green an advantage because their intel is harder to dig under.

I think ill be blue

Good! BLUE MASTER RACE!