March 28, 1656
Battle involving colonists and indigenous peoples fought near Richmond, Virginia
1656 alliance between Austria and Poland–Lithuania
1656 battle of the Polish-Lithuanian Commonwealth and Crimean Khanate, against Sweden and Brandenburg
1656 by Swedish forces during Deluge
1656 treaty between Spain and English Royalists
July 1656 naval battle between Russia and Sweden
Battle at Rautu Kyrka in 1656
1656 treaty between the Netherlands and Ahanta
1656 military engagement of the Deluge in Greater Poland
1656 treaty to divide the Polish–Lithuanian Commonwealth between the signing parties