<Li> Fourth - Gen </Li> <Tr> <Td> Battlespace (show) <Ul> <Li> Air </Li> <Li> Cyber </Li> <Li> Information </Li> <Li> Land </Li> <Li> Sea </Li> <Li> Space </Li> </Ul> </Td> </Tr> <Ul> <Li> Air </Li> <Li> Cyber </Li> <Li> Information </Li> <Li> Land </Li> <Li> Sea </Li> <Li> Space </Li> </Ul> <Tr> <Td> Weapons (show) <Ul> <Li> Armor </Li> <Li> Artillery </Li> <Li> Biological </Li> <Li> Cavalry </Li> <Li> Chemical </Li> <Li> Conventional </Li> <Li> Cyber </Li> <Li> Electronic </Li> <Li> Infantry </Li> <Li> Nuclear </Li> <Li> Psychological </Li> <Li> Unconventional </Li> </Ul> </Td> </Tr>

What is a group of military troops called