At 01:20 Firebase Illingworth 22 miles north-northwest of Tây Ninh occupied by Companies C and E, 2nd Battalion, 8th Cavalry Regiment, B Battery, 5th Battalion, 2nd Artillery, A Battery, 1st Battalion, 30th Artillery, A Battery, 2nd Battalion, 32nd Artillery and B Battery, 1st Battalion, 77th Artillery received over 200 rounds of mortar and rocket fire followed by a ground assault by two companies.