He and the Dutch would also have passing aircraft drop materials to simulate a bombing run ; this was intended to improve response time .
Aside from teaching local citizens the safety procedures for dealing with an air raid , Sudirman established watchposts throughout the area .
Sudirman and the Dutch would also have passing aircraft drop materials to simulate a bombing run ; this was intended to improve response time .
Aside from teaching local citizens the safety procedures for dealing with an air raid , Sudirman established watchposts throughout the area .