Is there warning before martial law comes?

Typically, there is little to no formal warning before martial law is declared, as it is often a response to urgent crises such as civil unrest, natural disasters, or threats to national security. Governments may issue public statements or alerts leading up to the declaration, but these can be vague and may not provide sufficient time for citizens to prepare. The decision to impose martial law is usually made quickly to restore order, and the announcement may come as a surprise to the general public.