After you have set up your camp. Sent your troops to the river before the elvencamp. Sent saruman up the hill (At the left side of the road wich your army needs to take to the elvencamp) when saruman reaches the top you will see a stone cave and you will get some NICE cave trolls(3) with 8000 health each :D let them put up rocks run inside the camp and trow them at those elfs. When the ents apear don't worry your trolls are strong enough and don't forget you still have your army of uruks. To clear the job
When you start off you have all of the heroes like frodo, gandalf, gimli etc. Only use the best heroes which are Gandalf, Aragorn and Legolas and train them up to level 3 each (that is the highest it will go up to on the first mission). To do this share equally the enemies with these 3 heroes and when 1 is level 3 stop useing him, it is pointless to carry on with him. Continue this and it will be easy for you in the next levels with them 3 heroes.
If you and your ally fights a medium and easy army mordor or isengard, you could come across the balrog, don't worry here is three ways of getting rid of it.
1) If you have the power, use sommon eagles and have them swoop at it till it dies. 2) If Aragorn is at rank 10 or you got 10 power, use the army of the dead to take it down. 3) If all else fails use gandalfs lighting or istari light, (lighting is better).
Step 2 - place the file in your data file within the Battle of Middle Earth folder (default location C:/Program Files/EA Games/Battle for Middle Earth)
Step 3 - Cut and paste the original ini file from the B4ME folder into another folder outside of the B4ME folder (so you can always go back to the default program)
Step 4 - Now access the gamedata.ini file in the ini folder you just placed in the data folder. Half way through the file is the area where you change the unit limits - BUT SCROLL DOWN FURTHER - you'll find another section for individual units.
Change whatever you want. I have it so any building or unit only costs me 1 point and 1 second to build (the number listed by "duration of build" is in seconds), plus all my characters have more health (the Rhorarrim can endure the pikesmen a lot easier, and regular orcs and archers barely inflict any damage).
Once I made these adjustments, Pelenor fields was awesome! No Mordor soldier even got close to the Minis Tirith wall (my archers made short work of the mumakils - like 4 arrows killed them)!