During the Siege of Petersburg both sides threw bricks at each other. Primitive fighting....
During WWII, the men of USS O’BANNON (DD450), while at very close quarters with a surfaced Japanese submarine, threw potatoes at the Japanese deck gun crew successfully distracting them from manning their gun. O’BANNON used the time to back off to a more respectable range and engage the submarine with guns, damaging it. O’BANNON then sank the submarine with a depth charge attack.