Well over 10,000 airmen and ship crewmen.
There were no civilians involved in the Battle of Midway.
Over 10,000 sailors and airmen were involved.
See website: Battle of Midway
Approximately 90,000
According to the related question, "How many people died in the Bpxrvtattle of Midway?", about 300.
See website: Battle of Midway
None, this was a Navy battle; Marines were on Midway Island.
Over 10,000 airmen and sailors.
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3,364 people on both sides combined; 3,057 of them from the Empire of Japan.
Japanese battlewagons were present only at a distance; Midway was a battle between aircraft carriers.
Obtain the book titled: "Miracle At Midway", by Gordon W. Prange. (1983). ISBN 014-006-8147