Little Soldiers
Little Soldiers movie revolves around two kids, Bunny (Kavya) and Sunny (Aditya). While Bunny is the younger one and naughty, Sunny is the elder brother. Things take a different turn for them when they are orphaned in an accident and are forced to live with their new guardian, the strict disciplinarian army man - their grandfather (Kota Srinivasa Rao).
Starring Kavya, Aditya Y.S., Giri Babu, Rohini Hattangadi, Heera Rajgopal, Brahmanandam, Ramesh Aravind, Kota Srinivasa Rao, Rallapalli Narasimha, Sudhakar
Watch "Little Soldiers" on Amazon Prime released in 1996. It's a comedy and thriller movie, and has a rating of 8 out of 10 from Imdb which is usually fine for this kind of movie.