R. Kook on Deliberate, Unwitting, and Unavoidable (7 Iyar)

שו"ת דעת כהן סימן רטז 7 Iyyar, 5676 (1916)

A soldier hears about his father's death while in the midst of battle, and cries about it, and later Pesach comes. Does he still have to sit shiva?