Tetsubo said:
The Warforged were made for battle, hence their name. But frankly they don't seem to be well suited to the task.
SKR said this, too, but I don't get it. As a certain Mr. Bonaparte once said, "An army travels on its stomach"
Trail rations
Drinkable water (or beer, or whatever)
Pack mules to carry it
Feed for the mules
Teamsters for the mule train
Guards for the mule train
Pay for the soldiers
...that's a lot of money you could save right there - plus the added convenience of not having to worry nearly so much about your supply lines being cut off. Worth more than orcs? Heck yeah.
Second, warforged don't sleep. Or get tired. That means that they can move a hell of a lot faster than normal troops, even at a walk - they've got three times as long to do it in! And if they hustle or run, well...
It's unclear if "immune to fatigue" means that you're immune to the subdual damage from forced marches and extra hustling, but it doesn't seem out of line. Even if you only let them march 8 hours a day, though, they're still going to be ready to fight 24/7 - no sneaking across the river to catch the Hessians asleep in their beds. No coming across them when they're not wearing their armor.
Third, add in the amount of problems that were caused for armies because of disease. The warforged, being immune to disease, won't have problems with camp sanitation. They won't all be sick of dysentary the night before the big battle. They won't die of an infected wound after the fight.
Fourth, the warforged exist solely for war. They don't have a family that they want to get back to. They don't have to be returned in time to till the fields or to harvest, so that your country has enough food to last through the winter.
And fifth, the warforged come 'out of the box' with a PC class level, as opposed to the warrior level that the orcs are going to have.
Now how much would you pay?
J