I will be adding more about the philosiphy and the history of Kumdo later on, but to summerize what kumdo is I have listed a few of the ideas practiced in the gym.

Spirit of Kumdo:

Sa Goon Yi Chung: Be a patriot of the highest form.

Sa Chin Yi Hyo: Respect your parents and be grateful.

Kyo Woo Yu Shin: Trust, honesty and fidelity are essential
between you and your friends.

Im Jeon Mu Tue: Never retreat or back down until you have
achieved your goals.

Sal Seng Yu Tak: Respect life in all forms; know when to kill
and when not to kill

These are Kumdo practitioners' ultimate goals to be attained.