Battle of Wallhof (Latvian: Valles kauja, also known as Battle of Walmozja) was fought between Sweden and the Polish-Lithuanian Commonwealth on 7 January 1626.

History

Swedish forces consisting of 4,900 men (2,100 of them cavalry) with six guns under Gustavus II Adolphus ambushed and took by surprise a Polish-Lithuanian force of 2,000–7,000 men (sources differ) with three guns under Jan Stanisław Sapieha. Polish-Lithuanian casualties amounted to between 500 and 1,000 or between 1,000 and 2,300 killed, wounded, or captured; their commander collapsed from mental illness after this defeat.
The Swedish king Gustav claimed: "not a single man is missing; everyone is where they should be" which is hard to believe, but to have suffered very small casualties is most likely true.

In the battle Gustavus Adolphus' reformed tactics, utilising close cooperation between infantry and cavalry, were tried for the first time. It was also the first time the Swedish cavalry successfully withstood the Polish cavalry.

The Swedes attacked the Lithuanian camp at dawn and, since the camp was located between two woods, the Lithuanian cavalry could not outflank the Swedes. Instead, the Swedes used the woods to fire upon the Lithuanian cavalry charge.

• 
  The battle depicted on a contemporary engraving with the format 290 mm x 1070 mm.