Dr. King, a minister, civil rights leader, intellectual, social reformer and author, was assassinated after more than a decade of seeking peace in the volatile social transformation of America.
"It took me about 15 years after (Dr. King's) death to understand that the fight was not all about African Americans, it was about improving the life for all Americans," Cooper said.
"Our Army is a microcosm of our society, but it is also a standard bearer for our society. Every day, each of you live the values that others aspire to," Cooper said. "We must carry on the tradition of Dr. King by being worthy of that example."