How does combat with weapon and shield work?

In Ars Magic 5th I am not able to find how combat works for a character with weapon and shield.

Attack total is:

Dexterity + Combat Ability + Weapon Attack Modifier + Stress Dice

Defense total is:

Speed + Combat Ability + Weapon Defense Modifier + Stress Dice

If a character fights with a sword and a shield, does it add both Defense Modifiers? Is the same done with Attack Modifiers?

• I have spanish edition, so I needed to translate it back to english. Probably it is a fault on my side. – Envite Sep 9 '15 at 17:25
• I'm removing the tag again, and removing the instructions you wrote in the tag wiki to use both tags, because it's unnecessary to overtag questions. If people want to find all questions about Ars Magica, they can search/favourite ars-magica*. – SevenSidedDie Sep 9 '15 at 18:01
• Should you, then, remove the double tag from all ars-magica-5 questions? – Envite Sep 9 '15 at 18:05
• @Envite Probably most of those questions aren't about every edition and so the tag doesn't belong, but digging through old questions just to fix one tag is a waste of people's time and eyeballs on the front page (since editing bumps questions). They'll get removed organically as they return to the front page or as people trip over them while looking for other things. – SevenSidedDie Sep 9 '15 at 18:06