A post and beam frame supplies this shelter for subsequent cordwood mortaring. On 5 January 2015, The Pentagon acknowledged that ISIL had been ineffectively mortaring the base. On January 5, 2015 the Pentagon acknowledged that ISIL has been ineffectively mortaring the base. On the exterior joints packed as tightly as possible prior to mortaring. But clearly the offensive, and especially the mortaring, precipitated the exodus. At 14&colon;30 the PAVN began mortaring the position and then attacked with infantry.