Cliff Cheung Chi-fai used to visit police headquarters regularly during almost 30 years in the disciplined services. On Friday he will go to the same building in a completely different role - to turn himself in for allegedly taking part in an unauthorised assembly. Cheung, who retired this year, is among some 10 devoted Occupy Central volunteers from across generations who plan to surrender en masse for participating in the months-long pro-democracy sit-in. They hope their display of unity will prompt more people to join the democracy movement in the future. "The environment [of police headquarters] might not be too foreign to me and basically I know what the procedure will be like," said Cheung, an Occupy marshal at the Admiralty protest site. "I just hope my friends [in the force] will perform their duties." The 55-year-old retiree, who refused to disclose which branch of the disciplined services he worked for, expressed regret that Chief Executive Leung Chun-ying and Police Commissioner Andy Tsang Wai-hung had placed frontline police officers in confrontation with pro-democracy protesters. "We used to stand in the middle, trying to assist the protesters to reflect their calls," Cheung said. "But now when I look at [the officers'] eyes … I feel like we are forever the enemy. "Now the movement is over, it's time for me to mark a full stop to my civil disobedience," said Cheung who added that he planned to continue his fight for democracy. The end of Occupy protests are widely regarded as a new beginning for the volunteers. "I always believed civil disobedience could trigger a moral awakening," said Andy Wong Hiu-hei, an information technology officer who visited the occupied sites after work every night. "I hope [my surrender] will prompt my kith and kin to think about what's going on in our society … I hope my friends who did not stand up last time will devote more … in the future." Fung Tak-wah, in his late 50s, said: "I used to think my students were rather passive … but now my impression on them has been changed completely," Fung said. "We have failed to achieve it in the past, but perhaps they can make it in future."