1615
1616
A peace was soon afterwards concluded between Sweden and Denmark; but Gustavus retained his Scots veterans in his service; and in 1615 he commenced a war with Russia. He soon rendered himself master of the province of Ingria,—took by storm the strong fort of Kexholm, and besieged Plesko; but he was induced to desist from further enterprises by the pacific interposition of King James I. of England, and a cessation of hostilities took place.
1617
1619
The Scots in the service of Gustavus were, however, allowed but a short period of repose before they were again called upon to take the field. In 1617 Gustavus invaded Poland; and his troops were engaged in various actions until 1619, when a truce was agreed upon by the contending powers.
1620
1621
In 1620 the King of Sweden renewed the war; and the Scots, under Colonels Ruthven and Seaton, distinguished themselves at the siege and capture of Riga, the capital city of Livonia. The towns of Dunamond and Mittau were also captured soon afterwards; and these successes were followed by another truce.