Valiant

In May 1944, during World War II, three Royal Homing Pigeon Service (RHPS) war pigeons led by Mercury are flying across the English Channel when they're ambushed by a German-affiliated peregrine falcon named General Von Talon. A small wood pigeon named Valiant watches an Allied propaganda film before hearing about signups for the RHPS in Trafalgar Square, where he meets Bugsy, a slovenly but friendly pigeon who joins him on his journey. The pair are assigned to Squad F, along with Lofty and two muscular pigeons, Toughwood and Tailfeather. Valiant develops a crush on Victoria, a dove who is the camp's nurse, and uses his short stature to infiltrate Von Talon's bunker to rescue Bugsy and Mercury.