True20 Warrior's Handbook

From the publisher's website:

The final sourcebook spotlighting the three heroic roles of True20 Adventure Roleplaying, the Warrior's Handbook is all about combat, from brutal hand-to-hand fighting with primitive weapons to shootouts with modern or futuristic armaments and mass warfare with entire armies. This sourcebook provides options and enhancements for the True20 combat rules, new skill and feat options for warrior heroes, and expansions like mass combat. Take your heroes and your adventures to the next level with the True20 Warrior's Handbook.