| Gauss |
First, a Warpriest can take combat feats and not just fighter feats with his bonus feats.
Second, he counts as a fighter of a level equal to his warpriest level.
ACG p62 wrote:
Bonus Feats: At 3rd level and every 3 levels thereafter, a warpriest gains a bonus feat in addition to those gained from normal advancement. These bonus feats must be selected from those listed as combat feats. The warpriest must meet the prerequisites for these feats, but he treats his warpriest level as his base attack bonus for these feats (in addition to base attack bonuses gained from other classes and racial Hit Dice). Finally, for the purposes of these feats, the warpriest can select feats that have a minimum number of fighter levels as a prerequisite, treating his warpriest level as his fighter level.