Penny could study archaeology. She's combat ready!
But seriously, in the first couple seasons Dr. Jackson hardly did anything resembling combat, except hiding and running away. Only later on did he pick up on the action hero stuff. Not everyone needs to be a soldier, and the archaeologist could be replaced by a diplomat, a cultural anthropologist, etc.
That said Fujitaka should be able to learn some magic... and so should Daniel Jackson, now that I think about it.
But seriously, in the first couple seasons Dr. Jackson hardly did anything resembling combat, except hiding and running away. Only later on did he pick up on the action hero stuff. Not everyone needs to be a soldier, and the archaeologist could be replaced by a diplomat, a cultural anthropologist, etc.
That said Fujitaka should be able to learn some magic... and so should Daniel Jackson, now that I think about it.
"Kitto daijoubu da yo." - Sakura Kinomoto