The GMA-7 actor shared on his Instagram account photos from the ceremony held on October 28.
"Today I was welcomed aboard as a Philippine Navy Reserve," Rocco wrote. "Received the certificate of completion for the Basic Civilian Military Training and a citation for finishing first for the physical fitness test. Ready to work my way up! All of this not to brag, but to be of service by motivating the youth to embrace patriotism and instill discipline while early in their lives. Para sa bayan, para sa kinabukasan! #PhilippineNavy #Reserve"
As part of his duties as a Navy reserve, Rocco even gave a talk at a university about love for the country.
Rocco also trained with the Philippine Army in July, as part of his preparations for the Philippine remake of the K-drama Descendants Of The Sun (DOTS), where he plays Sgt. Diego Ramos, aka "Wolf." Joining him were DOTS co-stars Dingdong Dantes, Prince Clemente, Jon Lucas, Paul Salas, and Lucho Ayala.