The "F" Company History for 26 April contains the following entry:

"The past two days have been spent quietly in the men's positions, giving all a chance to write home and clean weapons for the action that was seen in the future. During the afternoon of today an artillery shell burst over the company CP and fatally wounded Pfc Virgil Surber."

Lt. Calhoun recalls the incident in "Bless 'em All":

The artillery round that killed Virgil Surber was fired early that morning while the men were heating their 10 in 1 rations. The mortar platoon was about 40-50 yards from the company C.P. They were down the ridge and below us, and I could see them plainly. The round burst in the air, and there seemed to be no unusual activity such as yelling "medic". As a consequence I was stunned to learn that Surber was dying. Just one single air burst that seemed so insignificant.

Ref: Bless 'em All