integritas
fidelitas
gubernatio
Tallpine's got most of it here.
There's no translation for Selflessness. I'd suggest sacrifice: Sacrificum (easy cognate, too)
Leadership is another difficult one. Gubernatio is a little more official, I'd go with imperium. Power to command.
I'd suggest:
Intergritas
Fidelitas
Sacrificium
Imperium
Intergrity, Faithfulness, Sacrifice, Power
I'll see what can be done about "leadership" to come closer. However, I like the symmetry of two third declension nouns and two second declension nouns.
Edit: forgot an i in Sacrificium