！！
Alright! Mop-up complete!
Literal
Alright! Mopping-up completed!
Military/combat interjection. 掃討 = 'mopping up (enemies), cleanup (of resistance)' — a formal, military-flavored Sino-Japanese term. Noun-ending declaration with no copula — typical of announcements and status reports. よし is the 'alright!' preparatory/satisfaction interjection.