Complex sentence: Gabe is also supposed to meet Maggie Powers of MI6, but at the rendezvous point, he finds a written note that Maggie is captured by local Spetznaz, who had ties with Red Section and he tries to help the local militia fight them.
Split into simpler sentences: Gabe is also supposed to meet Maggie Powers of MI6, but at the rendezvous point, he finds a written note that Maggie is captured. Gabe finds out the local Spetsnaz had ties with Red Section and he tries to help the local militia fight them.