Quartermaster, U.S. Navy. Awarded for actions on board the U.S.S. Brooklyn.
August 05, 1864
On board the U.S.S. Brooklyn during action against rebel forts and gunboats and with the ram Tennessee, in Mobile Bay, 5 August 1864. Despite severe damage to his ship and the loss of several men on board as enemy fire raked her decks from stem to stern Kenna fought his gun with skill and courage throughout the furious action which resulted in the surrender of the rebel ram Tennessee and in the damaging and destruction of batteries at Fort Morgan.