<Table> Minimum AFQT <Tr> <Th> </Th> <Th> Tier I </Th> <Th> Tier II </Th> </Tr> <Tr> <Th> Branch </Th> <Th> ≥ HS Diploma </Th> <Th> = GED </Th> </Tr> <Tr> <Td> Army </Td> <Td> 31 </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Marines </Td> <Td> 32 </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Air Force </Td> <Td> 36 </Td> <Td> 65 </Td> </Tr> <Tr> <Td> Navy </Td> <Td> 35 </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Coast Guard </Td> <Td> 40 </Td> <Td> 50 with 15 college credits </Td> </Tr> <Tr> <Td> * Army National Guard </Td> <Td> 50 </Td> <Td> 50 </Td> </Tr> <Tr> <Td> * Air National Guard </Td> <Td> 50 </Td> <Td> 50 </Td> </Tr> </Table> <Tr> <Th> </Th> <Th> Tier I </Th> <Th> Tier II </Th> </Tr> <Tr> <Th> Branch </Th> <Th> ≥ HS Diploma </Th> <Th> = GED </Th> </Tr> <Tr> <Td> Army </Td> <Td> 31 </Td> <Td> 50 </Td> </Tr>

What is the combat operation score on the asvab