Octavia falls down a hill while running from a mysterious pursuer in episode 1x05 "Twilight's Last Gleaming".
Lexa leads a procession with Finn's body to the Grounder town of Tondc in episode 2x09 "Remember Me".
The SGC mining crew is attacked by a tribe of Unas in episode 7x07 "Enemy Mine".
K'tano leads and trains a group of free Jaffa in episode 5x18 "The Warrior".
Chance and Maria Gallego meet up with a convoy in episode 1x07 "Salvage & Reclamation".