Zero.
In the midway battle the American planes and ship defeated the Japanese ones.
With the exception of one or more submarine strikes to dispatch cripples; Midway was fought by naval airmen: planes against planes & planes against warships.
Ocean
the battle of midway was fought by mainly air, partly sea, and no land. The US had planes station on Midway, but no actual fighting took place on land. It was mainly a battle of air craft carrier based air planes bombing the enemies ships.
Battle of Midway US naval aircraft sank the four Japanese aircraft carriers that were supporting the invasion force.
That was the Battle of Midway.
That was the Battle of Midway.
The Battle of Midway
From intercepted messages
Both sides used all aluminum (all metal) mono-planes during the sea battle. Only Great Britain continued to use obsolete WWI style Bi-Planes for it's naval use; until later in the war.
The only guns used at Midway were anti-aircraft guns and guns from torpedo bombers, dive bombers, and fighter planes. Midway, like the Battle of Coral Sea before it, were strictly "naval AIR battles."
About 200 planes, 3 carriers, and about 15 other warships (cruisers, destroyers, submarines, etc.).