On 11 March a reconnaissance unit operating 1km southeast of FSB Sophia engaged a PAVN patrol killing eight. The 2nd Regiment began its withdrawal from FSB Sophia with the 2nd Battalion walking to LZ Liz and then were lifted to LZ Brown. The 5th Battalion was landed 1km north of FSB Sophia where it joined the 2nd Regiment headquarters, while the 4th Battalion continued to hold FSB Sophia. The 1st Regiment continued its search of the Ta Luong area. On 12 March the 2nd Regiment completed its withdrawal from FSB Sophia with the eight 105mm guns destroyed by USAF airstrikes.