What i learned from byzantium ppl it looks like not important but it realy matter. You need to know map well and know where to move,and where not to go if you don't want to get early raped.
It realy matter if you know where cav go,where archers camp,where inf moves,so you know where to go. You will live much longer, and kill more.
Also you need to know when to run,when to attack,and will ur teammates run or fight with enemy.