yodan verb with 'tsu' ending (archaic), transitive verb
to call out from many; to select and summon
Archaic transitive verb. Used in classical Japanese for singling out and summoning someone from a group. The modern equivalent would be 呼び出す or 選び出す.
In old records, it says 'to call out a brave warrior from among the soldiers.'
Compound of 召し (continuative form of 召す, 'to summon') + 放つ ('to release, let go'). The exact historical derivation is uncertain, but it likely referred to releasing someone from a group by calling them forth.