Tokubetsu-keibi-tai (Metropolitan Police Department)

The Special Security Unit (特別警備隊, Tokubetsu-keibi-tai^?) was a rapid reaction force of the Tokyo Metropolitan Police Department (TMPD) in the pre-World War II era.

In 1933, this unit was established in the Police Bureau (, Keimu-bu^?) for the riot control, counter-terrorism, search and rescue, disaster response or other emergency missions. The strength was 307 officers, divided into four companies. As a SWAT team of the TMPD, they were equipped with a jō, tantō and FN Model 1910 semi-automatic pistol while ordinary police officers had only a sabre. And a bulletproof vest was also equipped as needed. They were popular as "Shinsengumi in the Shōwa period" even among the common people.