This is a list of military engagements of the Second Sino-Japanese War encompassing land, naval, and air engagements as well as campaigns, operations, defensive lines and sieges.
Campaigns generally refer to broader strategic operations conducted over a large bit of territory and over a long period.
Battles generally refer to short periods of intense combat localised to a specific area and over a specific period.
A flag icon to the left of a battle's name shows the victorious side in the engagement.
Flag shows victorious side in each engagement.