Warman, they charged up a hill because that was the way to do it.
If I have a hill and someone wants to attack me he will charge it. That was the only way to do it back then, fact.
You don't send one platoon round the side, etc etc.
You just march 5000 men onto it and start fighting, different times.

War back then was different. You didn't have a home front that would start complaining about casualties, if 2000 men have to die, so be it, aslong as you win.
War was seen as something romantic yes, you would march to the enemy, form the line, fire, fix bayonets and charge. That's how you did it. But really with the coming of the machine gun this changed. It meant cavalry came out of use, but in WW1 you would still slowly walk at the enemy to attack him. Tho there was a change, little companies were used more often. It wasn't an entire division in a line, it was walking to them, then doing seperate tasks.

The first war were this really changed was WW2, were sub-machine guns and tanks had a big role.

We're not used to making war like this, but back then they didn't know any different. For us it's easy to speak after the battle, but you need to know what the commanders knew.