Caroleans (Swedish: karoliner) were the soldiers of the Swedish kings Charles XI and Charles XII whose notable tactics differed from that of Western Europe through a greater reliance upon pikes, bayonets, and the spirit of the offensive.
To compensate for the lack of manpower and resources Sweden strove for innovative ways to make an effective army. The successful path of innovative military ideas was in fact the only way Sweden managed to achieve a great power status. However, having to rely on this to maintain power status was uncertain. The Carolean soldiers were effective soldiers, as shown by their efforts in the Great Northern War, with battles such as Narva, Düna, Klissow, Pultusk, Jakobstadt, Gemauerthof, Warsaw, Fraustadt, Holowczyn, Helsingborg and Gadebusch. Thanks to their achievements during this war, they are regarded to have been perhaps the most effective military troops of that day. The Carolean army was small; because of the sparse number of Swedish soldiers, heavy losses could be irreparable. The Carolean army was defeated after a long and fateful march into the Russian interior, where they were exposed to scorched earth tactics, small frequent raids and the cold Russian climate. The Swedish soldiers who reached the Battle of Poltava were exhausted and hungry. During this long march an estimated 35,000 Swedish soldiers - 70 percent of the army - died of famine, disease and exhaustion. The battle ended with a decisive Russian victory which resulted in the decline of the Swedish Empire.