Inaccurate?

Shield Wall

( Heroes of Battle, p. 99)

[Fighter Bonus Feat, General]

You are skilled in using shields when in formation with other shield-bearers.

Prerequisite

Shield Proficiency (PH) ,

Benefit

When you and an adjacent ally are each using a shield, your shield bonus to Armor Class increases by 2.

Special

A fighter can select Shield Wall as one of his fighter bonus feats (see page 38 of the Player's Handbook).