Rubuta ci gaba don wannan sakin layi - An kafa rundunar a kusan 1624 a lokacin Yakin Poland da Sweden na 1621 <unk> 25, wanda aka samo asali daga lardunan Sweden. Bayan saukar Gustavus Adolphus da rundunarsa a Pomerania, sabbin 'yan wasa sun zo daga mazaunan Jamus na gida don cika sahu. Daga 1630 zuwa gaba, rukunin Blue ya shiga kusan kowane yaƙin shiga tsakani na Sweden a cikin Yaƙin Shekaru talatin, kamar yaƙin Breitenfeld (1631), Lützen (1632) da Nördlingen (1634)
Ka yi haƙuri. Yaƙin Lützen musamman, inda ake magana da shi a matsayin "Tsohon Blue" rundunar, kodayake wannan sunan ya kasance na hukuma ne daga 1634 kawai, ya kasance bala'i ga rundunar kamar yadda ta rasa fiye da rabin tsoffin sojojinta daga hare-haren da ke faruwa na sojojin doki na Imperial da kuma manyan abokan gaba.