Brothel In Japan

In cases of illegal brothels, the latter arrangement provides some level of plausible deniability to the facility owner, who often (thinly) disguises the brothel as a massage parlor, bar, strip club or similar business.
Military brothels
Until recently, in several armies around the world, a mobile brothel service was attached to the army as an auxiliary unit, especially attached to combat units on long-term deployments abroad.