What do you mean by one policeman and six police officers?

The meaning of this word is as follows:

"One police officer and six officers" refers to the community public security police and the Central Armed Police on duty in Beijing; Grassroots staff of streets, township governments and village (neighborhood) committees; Safety production inspector; The staff of the realty service enterprise; Security; Staff of key fire safety units such as catering and entertainment and high-risk fire places; Miniature fire stations, volunteer fire brigades, social volunteer forces and other forms of firefighters.