Munro received the medal for his heroic actions at Guadalcanal on Sept. 27, 1942. He was killed while using his Higgins boat to shield nearly 500 withdrawing Marines from enemy fire. His full Medal of Honor citation can be read here.
For extraordinary heroism and conspicuous gallantry in action above and beyond the call of duty as Petty Officer in Charge of a group of 24 Higgins boats, engaged in the evacuation of a battalion of marines trapped by enemy Japanese forces at Point Cruz Guadalcanal, on 27 September 1942. After making preliminary plans for the evacuation of nearly 500 beleaguered marines, Munro, under constant strafing by enemy machineguns on the island, and at great risk of his life, daringly led 5 of his small craft toward the shore. As he closed the beach, he signaled the others to land, and then in order to draw the enemy’s fire and protect the heavily loaded boats, he valiantly placed his craft with its 2 small guns as a shield between the beachhead and the Japanese. When the perilous task of evacuation was nearly completed, Munro was instantly killed by enemy fire, but his crew, 2 of whom were wounded, carried on until the last boat had loaded and cleared the beach.