How is it terrorism when they kill soldiers?

[rajpoot]

I would disagree somewhat, especially with the suicide bomber example...

A suicide bomber believes with the utmost belief he is doing the right thing (assuming he's not a smart person who is purely driven by revenge, or just for the express ticket to heaven) he is someone who is literally willing to blow themselves apart to hurt the enemy...

The problem is, that they are willing to blow themselves apart to harm civilians. If you harm unarmed people is a war, then you are a coward.

If only causing terror is the definition of terrorism then any army that conducts an invasion is filled with terrorists, if it is only causing terror that is terrorism then can someone explain where shock and awe differs from terrorism ?

There is more then one point that differs armies from terrorists.
- Terrorist don't belong to any one nation.
- Unlike the army which tries to finish off the combatants to win a war terrorists explicitly try to kill the non combatants to create terror.

That is fighting face to face with armed men, even guerrilla warfare is not their chosen method. They will try to harm the helpless public to such and extent that the state finally gives in.