WoTLK：It is possible to build an army from DonnaStella's blog

Therefore it is, if you're participating in WOTLK Gold an event with more than other players, you won't be able to afford massive forces stomping around the battlefield. You'd be without defense. If Blizzard plans to allow 12-player games, then perhaps they're also considering allowing players to play with more units in the field.

It's not that you'll reach the limit of supply immediately, but naturally. Each faction in World of Warcraft are subject to the rules of upkeep. which is a brand novel concept for Blizzard's live-time strategy games, although it's this isn't a novel concept in strategy games. The basic idea behind it is that building an army does not just require the money upfront it is an ongoing cost. 

The way that World of Warcraft handles maintenance is quite straightforward It's as simple as this: the larger your army gets and the more resource collection will be. In the beginning the game, your worker unit will normally haul around 10 gold units at one time. Once your army has reached an amount that is more than 30 units of supplies--an maintenance penalty begins to take into effect. 

In the meantime, you'll only bring 70% of resources you typically would and seven gold units per journey. If you go over 60 units of inventory the cost of maintenance will increase, meaning your amount will be reduced to 40 percent. The upkeep isn't currently affecting the speed that wood is collected but gold is the primary resource used in the game.

At any point you'll need to be aware of how much maintenance your army needs.

The goal of the upkeep system is to stop the type of defensive behaviour that is prevalent in other strategy games that are real-time. Instead of rewarding your for getting down and building an unstoppable army World of Warcraft discourages you from storing resources and units. 

It is possible to build an army that is large however, when it's in good condition and able to accumulate resources will be limited. The best option is to remain in the frontline and stay clear of the high maintenance zones as far as is possible and not be concerned of losing your units. In this way, you'll have plenty of resources to replenish your troops.

While the style that is used in World of Warcraft has changed buy WOTLK Classic Gold  quite dramatically over the course of development, one thing that hasn't changed has been the importance of hero characters strong warlords that boost your armies' power and guide them towards victory.