1st - Bonus Feat
2nd - Bonus Feat
3rd - Weapon Group
4th - Bonus Feat
5th - Leadership
6th - Bonus Feat
7th - Weapon Group
8th - Bonus Feat
9th - Landlord
10th - Bonus Feat
11th - Weapon Group
12th - Bonus Feat
13th - Great Renown
14th - Bonus Feat
15th - Weapon Group
16th - Bonus Feat
17th - Henchmen
18th - Bonus Feat
19th - Weapon Group
20th - Bonus Feat
Weapon Group: At 3rd level, and every four levels thereafter (7th, 11th, 15th, and 19th level) a fighter gains proficiency with an additional weapon group. See Unearthed Arcana for details on the weapon group variant.
Leadership: At 5th level, a fighter gains leadership. His leadership score is based on his fighter levels only, however the maximum level of his cohort is based on his character level.
Landlord: At 9th level, a fighter becomes a landlord. He must swear fealty to a leige, either a lord, king, church, or similar entity to gain this benefit. His stronghold allowance is based on his fighter levels only. This grants the fighter an additional +2 bonus to his leadership score. See the landlord feat in Stronghold Builder's Guide.
Great Renown: At 13th level, a fighter gains great renown for his fighting exploits, granting him a +2 bonus to his leadership score.
Henchmen: At 17th level, a fighter's receives henchmen in addition to his cohort. A henchman follows the same rules as a cohort, only they must all be two or more levels lower than the cohort. A fighter may have one henchman for every five class levels (round down).