More specifically (maybe Lewena can add a short section for cross-class skills), you will want to get Blood for Blood and Invigorate from the Lancer class (lv34), and Fracture/Bloodbath/Mercy Stroke from the Marauder class (lv26).

The good thing about this is, if you wanted to level these other classes into jobs, Warrior can use Featherfoot, Second Wind, Internal Release, and Mantra from pugilist, and Dragoon can use these as well (along with the MRD abilities). So it works out quite nice.