<P> Following the initial assault by the north, the Korean War saw limited use of tanks and featured no large - scale tank battles . The mountainous, forested terrain, especially in the Eastern Central Zone, was poor tank country, limiting their mobility . Through the last two years of the war in Korea, UN tanks served largely as infantry support and mobile artillery pieces . </P> <Table> <Tr> <Th_colspan="2"> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> Naval engagements of the Korean War (1950--1953) and post-armistice incidents </Th> </Tr> <Tr> <Td_colspan="2"> <Dl> <Dt> Pre Armistice </Dt> </Dl> <Ul> <Li> Korea Strait </Li> <Li> Chumonchin Chan </Li> <Li> Haeju </Li> <Li> Inchon </Li> <Li> Operation Wonsan </Li> <Li> Operation Tailboard </Li> <Li> Wonsan </Li> <Li> Operation Fireball </Li> <Li> Buzz Saw </Li> <Li> Operation Kickoff </Li> <Li> USS Walke Incident </Li> <Li> Han River </Li> </Ul> <Dl> <Dt> Post Armistice </Dt> </Dl> <Ul> <Li> Gangneung Incident (1996) </Li> <Li> Sokcho Incident (1998) </Li> <Li> Yeosu (1998) </Li> <Li> Maritime border incidents </Li> <Li> First Yeonpyeong (1999) </Li> <Li> Second Yeonpyeong (2002) </Li> <Li> Daecheong (2009) </Li> <Li> Cheonan sinking (2010) </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> Naval engagements of the Korean War (1950--1953) and post-armistice incidents </Th> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul>

How many nations took part in the fight against north korea