sadly, you can't in BW.
the gym leaders are the same as they are on pearl and diamond. but the order you fight the gym leaders are different. Turtwig would be the easiest way through the game.
You can fight the Kanto Gym Leaders in any order, except Brock, Blaine, and Green/Blue.
various gym leaders will be in various cities. you can fight them in any order, depending on whether or not you need special moves to get to them or whatever. you just have to travel around and you will find them.
I have fought every legendary Pokemon in red rescue team. Here is the legendary Pokemon you fight before the fist credits role - Zapdos - Moltres - Articuno - Groudon - Raquaza { in order of when you fight them}
if you mean fight as in when you order an attack and they fight against you than yes. if you don't have enough badges and your Pokemon are too high of level, this happens a lot with traded Pokemon, then they wont listen too you and will either fight using a different move or will just not fight at all.
There is no order
It provided many extremists with weapons and supplies in order to fight the Soviet Union.
The Kanto gym leaders come in no particular order, but Blaine is typically the last gym leader fought, and also the second to last gym leader appearing on the Trainer Card.
After the Johto region, you can battle the gym leaders out of order. Upon entering Kanto, you can battle the gym leaders in any order you wish. Thus, it is impossible to know who the 11th leader is to know what you are talking about.
It is not possible to reverse the order of Gym Leaders in Pokemon Pearl. This is due to how the story of the game is written. And the fact that the 8th Gym Leader will be impossible to beat at the start of the game.
In order to fight Cilian (dent) you will need to start with Oshawott.
In Pokémon Black 2, in order to get to the Champion Cup or the Pokémon World Tournament's Champions Tournament, you will need to defeat the Worlds Leaders tournament a minimum of 10 times. The World Leaders tournament will be unlocked once you have beaten the Kanto Leaders, Johto Leaders, Hoenn Leaders, Sinnoh Leaders and Unova Leaders tournaments.