Sentence examples for on service from inspiring English sources

The phrase "on service" is correct and usable in written English.
It is often used to indicate that someone is currently working or performing a duty on behalf of an organization, such as a company or military unit. Here are a few examples of how it can be used: 1. "I'm sorry, but John is currently on service and cannot be reached at the moment. Can I take a message for him?" 2. "Our company takes pride in providing exceptional customer service. Our employees are always on service to assist with any inquiries." 3. "The soldiers were on service for 6 months, serving in combat zones before returning home to their families." 4. "We have a team of technicians on service 24/7 to ensure that any technical issues with our products are addressed immediately." 5. "The police officer was off duty at the time, but he quickly returned to the station when he received the call that there was an emergency and he needed to be on service."