looking for comrades of my brother

looking for anybody that served in the "2nd Bn. 3Rd Mar.Reg. Echo Co.3Rd Mar.Div. 1968-1969,my brother 'Cpl.Darrell Napier 2406376,was K.I.A. QUANG TRI Province,Mar 25 1969 would love to hear from anybody that served with him or knew him, at the time he was in the Marines,so was i and our older brother,who retired after 20 yrs ,any help would be so deeply appreciated!!! Semper-Fi!!!!