Complex sentence: It was formed in 1998 as an N.D.C.C and later earned JROTC in the 2000-2001 school year, next year 2001-2002 the Battalion had earned an Honor Unit with Distinction.
Split into simpler sentences: It was formed in 1998 as an N.D.C.C and later earned JROTC in the 2000-2001 school year. The next year 2001-2002 the Battalion had earned an Honor Unit with Distinction.