Incursion

/ɪnkˈɜːʃən/

/ˌɪnˈkɝʒən/

Incursion

the act of entering some territory or domain (often in large numbers)

an attack that penetrates into enemy territory

the mistake of incurring liability or blame

Examples

1. And, more broadly, misuses of these concepts give incursions on free speech a good name.

2. We have the Estonian incursion in 2010.

3. Roman incursions into its northern frontier were growing more intense.

4. This reconnaissance unit specializes in sea-to-land incursions, maritime intelligence gathering, and hostage rescue duties.