Tower Shield Proficiency
( Player's Handbook v.3.5, p. 101)[General]
You are proficient with tower shields.
Prerequisite
Shielf Proficiency (PH) ,
Benefit
You can use a tower shield and suffer only the standard penalties (see Table 7-6: Armor and Shields, page 123).
Special
Fighters automatically have Tower Shield Proficiency as a bonus feat. They need not select it.
Normal
A character who is using a shield with which he or she is not proficient takes the shield's armor check penalty on attack rolls and on all skill checks that involve moving, including Ride.