Frag ihn doch einfach mal, ob er dir das Buch ausleiht. Da das nur noch wenige Leute spielen und die Bücher meist nicht digitalisiert sind, ist das mit dem Nachschlagen schwierig.
Trotzdem:
Spoiler (Anzeigen)Skills & Powers p. 115
Shield Proficiency
Shield proficiency improves a character's AC against one or more attacks per round from in front or from the side faced by the shield. This proficiency does not help against rear attacks or attacks coming from the flank opposite the shield.
Like other weapon proficiencies, the shield proficiency must be taken for a specific type of equipment-listed on Table 51 : Shield Proficiency Effects. The bonuses conferred vary by the type of shield the character chooses, and are added to the normal AC benefits of carrying a shield. The Number of Attackers category indicates how many attacks, per round, the shield proficiency can help against. If a character with a buckler, for example, is attacked by three enemies at once, his shield proficiency will only benefit his AC against one of those attacks. The player should designate which enemy he will guard against before attack rolk are made.
Table 51:
Shield Type AC Bonus #Attackers
Buckler +1 One
Small +2 Two
Medium +3 Threee
Body +3/+4 vs. missiles Four
p. 117
Fighting Style Specialization
Weapon and Shield
A character who specializes in this style can gain a +1 benefit to his AC (in addition to his regular shield effects) or a +1 on his attack roll during any melee round when he holds a shield and wields a weapon. Alternately, this benefit can be superseded by the more detailed shield rules in the Combat and Tactics book.
Complete Fighter's Handbook:
Weapon and Shield Style
Style Specialization
If you devote a weapon proficiency slot to specialization in Weapon and Shield Style, you receive one extra attack per round ...only when using a shield on the shield-hand, that is. You can use that extra attack only for the Shield-Punch and Parry maneuvers (see under "Melee Maneuvers," below). As with the normal "Attacking with Two Weapons" rules (see the Player's Handbook, page 96), when striking with both hands in a single combat round, the character suffers a –2 to attack rolls with his weapon and a –4 to attack rolls with the Shield-Punch or Parry. (If you're ambidextrous, as described above under "Off-Hand Weapons Use," that's a –2 with weapon and –2 with shield.) If you devote a second
weapon proficiency slot to Weapon and Shield Style Specialization, that penalty drops to with the weapon and –2 with the shield. (If you're ambidextrous, that penalty is 0 with weapon and 0 with shield.)
On any round when you perform two maneuvers, you do not get the AC bonus for the shield for the rest of the round. If you swing your sword and perform a Shield-Punch in the same round, you do not get your shield's AC bonus if anyone attacks you later in the round.
Combat & Tactics hat dann noch detailliertere Regeln für Kampfstile, Duelle und alles Mögliche. Die sind aber für die meisten Runden zu kompliziert um sie zu benutzen. Kein Wunder, dass TSR danach bald pleite gegangen ist.